Database Develop

[Q] is there a possible way to change the frequency??

I am living in Canada, and all galaxy tab available in this country is P1000 which has the frequency band of HSDPA 900 / 1900 / 2100.
But I am in Mobilicity which uses AWS(1700/2100) network like T-Mobile. Therefore, I can't use galaxy tab with my provider.
Is there any possible way I can change the frequency of galaxy tab P1000 to 1700 / 2100 ???
Please~~ anybody has an idea? if it is a software issue, at least I can try~
p.s
if it is impossible, anyone knows a shopping website sells a used t-mobile galaxy tab with shipping at Canada???

I have a very similar issue. I bought a T-mobile tab in California with the promise that it would work in Mexico. What that promise was the truth it wasn't the whole truth.
Mexico's 3g system is in a frequency of 850/1900 mhz. The T-Mobile device is on 1700 mhz. I realize that frequencies are a function of physical antenna length but they can also be tuned (as a radio receiver) which is what a cell phone really is.
Is there a way to tune the receiver part to correctly function on a different frequency?

You two should trade tabs.
T-mobile uses 2100/1700 aws and cannot be changed to other data frequencies. So the best you get is EDGE.
Also, T-mobile tabs have to use both frequencies, so they don't get 3g in places that use only 2100.
At&t uses 1900/850 and cannot be changed either. There are tabs that use 1900/900.
The only quad band tab is the unlocked no carrier version.

gspajon said:
I have a very similar issue. I bought a T-mobile tab in California with the promise that it would work in Mexico. What that promise was the truth it wasn't the whole truth.
Mexico's 3g system is in a frequency of 850/1900 mhz. The T-Mobile device is on 1700 mhz. I realize that frequencies are a function of physical antenna length but they can also be tuned (as a radio receiver) which is what a cell phone really is.
Is there a way to tune the receiver part to correctly function on a different frequency?
Click to expand...
Click to collapse
I use an at&t tab in Mexico with a Telcel sim card and get 3g. When I used a t-mobile tab, I only got EDGE with both aTelcel and a Movistar sim card.

djak420 said:
I am living in Canada, and all galaxy tab available in this country is P1000 which has the frequency band of HSDPA 900 / 1900 / 2100.
But I am in Mobilicity which uses AWS(1700/2100) network like T-Mobile. Therefore, I can't use galaxy tab with my provider.
Is there any possible way I can change the frequency of galaxy tab P1000 to 1700 / 2100 ???
Please~~ anybody has an idea? if it is a software issue, at least I can try~
p.s
if it is impossible, anyone knows a shopping website sells a used t-mobile galaxy tab with shipping at Canada???
Click to expand...
Click to collapse
You can try amazon.com.

rangercaptain said:
You two should trade tabs.
T-mobile uses 2100/1700 aws and cannot be changed to other data frequencies. So the best you get is EDGE.
Also, T-mobile tabs have to use both frequencies, so they don't get 3g in places that use only 2100.
At&t uses 1900/850 and cannot be changed either. There are tabs that use 1900/900.
The only quad band tab is the unlocked no carrier version.
Click to expand...
Click to collapse
Thank you for your response. In my case I cheaped out and bought T-mobile due to its price and the promise of receiving an unlock code. I was ignorant of the frequency issue until now...too late.
So now another question arrises. Since these devices are basically radios, wouldn't it be possible to write a piece of software that is essentially an antena tuner? Remembering my boyhood electonics (ham studies) it seems to me that any size radio antena can be "tuned" to the correct frequency with the right equipment. Or perhaps an after market hardware that utilizes the USB input port?
Just "spitballing" here but it seems to be an idea worth some money considering all of us who want more out of our devices. Any thoughts?

Yeah, buy the device with the right hardware for your carrier.
It's a hardware limitation. No piece of software will ever be capable of fixing it on earth. The hardware is not physically capable of those frequencies.

These devices are digital. When you went to school the radio technology was analog, and you could tune anntenas, but with digital, the wave is fixed only to the built in values, so no tuning possible.
Trading is easier.

@gspajon:
I use a Telcel Amigo sim in a t-mobile tab and a month to month data plan, 3 gigs of data and unlimited voice, for $30, and I can pay the bill through a website, or at any OXXO. The Telcel EDGE is pretty fast for surfing and navigating, and sending/receiving attachments. I can live with it.

Hey ranger I have the same deal and I too am able to find the edge network. However here in Progreso, Yucatan it is painfully slow. I'm sure that is a result of my distance from the main provider signal in Mérida. I am able to access the net and surf at speeds closed to dial-up. It's frustrating considering my tab is capable of so much more.
Botom line is I thought I hade reasearched this BEFORE I bought. The frequency issue never came up untill now...AFTER I spent the money. Oh well...my wife has an iPhone that I bought her here and I can link in to her with the router capability and my tab's wifi.
Thank you for your kind assistance...where in Mexico do you travel? You are welcome to visit here anytime...my house ison the beach and the weather here is almost always lovely.

rangercaptain said:
You two should trade tabs.
T-mobile uses 2100/1700 aws and cannot be changed to other data frequencies. So the best you get is EDGE.
Also, T-mobile tabs have to use both frequencies, so they don't get 3g in places that use only 2100.
At&t uses 1900/850 and cannot be changed either. There are tabs that use 1900/900.
The only quad band tab is the unlocked no carrier version.
Click to expand...
Click to collapse
So what happens when we flash different modems? I thought that changes the supported frequencies?

Many people wish this was true, but the at&t tab has a different radio from t-mobile, and no modem can change that.

gspajon said:
Hey ranger I have the same deal and I too am able to find the edge network. However here in Progreso, Yucatan it is painfully slow. I'm sure that is a result of my distance from the main provider signal in Mérida. I am able to access the net and surf at speeds closed to dial-up. It's frustrating considering my tab is capable of so much more. . .
Thank you for your kind assistance...where in Mexico do you travel? You are welcome to visit here anytime...my house ison the beach and the weather here is almost always lovely.
Click to expand...
Click to collapse
It is too bad about the tabs. I mistakenly bought a t-mobile tab too. I use it as a wifi tab most of the time.
I am a teacher in the US, but weekends and summers I am in Tijuana-Tecate building homes for poor families. We give away 250 homes a year, God willing.
My partner in Mexico grew up in the Yucatan - it is my wish to visit there some day!
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Two homes student from my school built last month.

There is hope
I recently found a new device that allows me to use my tab here in mexico as is. This solution may not work for every one but it is working great for me. I recently purchased a mobile wifi router that works on Mexico's 3g system. Its the Huawei E5.
Its about the size of a small cell phone and I can connect to it using wifi. It is portable so I can just put it in my pocket and off I go. Now I didn't have to worry with unlocking the tab. I just leave the original T-Mobile chip in and use wifi here in Mexico.
I am quite certain this little device is available in Canada as well. That way you (I) can move freey between two nations without the "blah-blah" of this system vs that one and how I "should've bought" differently.
The cost was reasonable and I have stll paid less than an iPad. Not to mention I can also use my laptop here the same way as in the US. The service is very reasonable and is actually less costly than t-moble.

Data speed on H - not as fast as it should be???

So I just bought a galaxy skyrocket for my wife. I'm in an LTE area. It is TEN TIMES FASTER on the skyrocket than the Note. Literally 10x. Used SpeedTest. Averaged 12800 download and 12200 upload. That's faster than my wifi. My note gets 1380 download and 380 upload. Horrendous!
I couldn't believe it. Now I realise why LTE is so good. Of course there aren't many people using LTE yet in NYC but still. That's unreal.
I have continued to test the Note v the Skyrocket and I think its not just LTE. I switched the sim but the lte sim didn't work on the note. However the note sim worked in the skyrocket and it still showed 2-3 x the note speed in a non LTE location. I cant get more than 1800 download when the skytocket shows 7000 in the same location same network. I tried the apn setting from the skyrocket but it doesn't work on the note. On wifi the skyroxket also showed double or more speed. Its very odd.
Anyone got any ideas?
Sent from my GT-N7000 using XDA App

ekerbuddyeker said:
SpeedTest. Averaged 12800 download and 12200 upload. That's father than my wifi. My note gets 1380 download and 380 upload. Horrendous!
I couldn't believe it. Now I realise why LTE is so good. Of course there aren't many people using LTE yet in NYC but still.
Click to expand...
Click to collapse
I am not going to say LTE is slower than HSPA+, because it should not be.
BUT, what I can tell you is HSPA+ can be really fast, and it usually never is a matter of the cellphone, but the network.
My Note, in a random speedtest I did yesterday:
That's pretty much 9Mbps down and 3Mbps.
That reduces a lot the diference to what you can get with LTE.
I would choose for improving a lot HSPA+ networks before starting with LTE...
By the way, during busiest hours of the day I can always get 5-6Mbps down and 2-3Mbps up.
At night, it is easy to see 11+Mbps
My network is Vodafone Spain, which here it is HSPA+ 14.4Mbps. And the tests I make are in Valencia, Spain.

I used to have the T-Mobile Galaxy S2 same hardware as the ATT skyrocket just no LTE.
I use to pull down 16-18Mbps on their 4G network, super fast almost matching my home cable internet.
Unfortunately the Note doesn't support T-Mobile's 4G so I had to switch to AT&T, now on average I get about 1.5-3Mbps, and most I've seen is peak to 7Mbps.
On T-Mobile I paid $20 a month for 5GB of data, now I'm paying AT&T $25 a month for 2GB! Too bad T-Mobile wasn't able to run my note on full data speeds or else I'd never switch.

wierdly side by side with the skyrocket in a Non LTE area the skyrocket still gets double the speed on H. On wifi it does the same.
Sent from my GT-N7000 using XDA App

ekerbuddyeker said:
wierdly side by side with the skyrocket in a Non LTE area the skyrocket still gets double the speed on H. On wifi it does the same.
Sent from my GT-N7000 using XDA App
Click to expand...
Click to collapse
Speed on a smartphone literally means squat. Those super fast speeds on the ****rocket are almost never utilized because of its crappy Snapdragon chipset.
The speed advantage that LTE phones have is almost never seen when browsing or anything because the Snapdragon is a piece of trash chipset. It's laggy, unreliable, but its the only chipset that works on LTE phones.
Thats why Im NEVER buying an LTE ****phone till they find a SoC that can outperform the 1.4ghz Exynos and put it in an LTE phone.That won't happen for a long long time. 12 months min.
Sent from my GT-N7000 using xda premium

@ eker - it must be your APN - i get about 3-3.5k down and 1.2k up
but I also get a MUCH better reception than my inspire 4g (in same spots that inspire barely got any reception, I get 2-3+ bars, and the whole thing just seems faster. I used standard APN settings - same as I used on my Inspire.
I'm in Boston area - and we got this retard heaven - Brookline, where they banned cell tower - so I used to not get any reception in many spots - now I do, and it's somewhat faster (internet speed that is) - in youtube for example

That's a lot of anger. Its just a phone... anyway in side by side tests with the note, loading web pages running maps or Google earth... actually every app, the phone speed is about the same. Have you actually tied the skyrocket????
I am happy with the note but trying to figure out why, in non LTE and side by side in wifi, the skyrocket is still significantly faster than the note. It feels a generation faster which is weird.
xAnimal5 said:
Speed on a smartphone literally means squat. Those super fast speeds on the ****rocket are almost never utilized because of its crappy Snapdragon chipset.
The speed advantage that LTE phones have is almost never seen when browsing or anything because the Snapdragon is a piece of trash chipset. It's laggy, unreliable, but its the only chipset that works on LTE phones.
Thats why Im NEVER buying an LTE ****phone till they find a SoC that can outperform the 1.4ghz Exynos and put it in an LTE phone.That won't happen for a long long time. 12 months min.
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
Sent from my GT-N7000 using XDA App

Slow speeds?

On at&t. I know they have a huge r&d operation in Israel but not Dubai
Sent from my GT-N7000 using XDA App

[Q] New Arizona RAZR i owner with questions

I live in Mesa, Arizona. I bought the Motorola RAZR i XT890, and signed-up for Tmobile service. I should receive the phone this afternoon. I have some questions about the phone and what kind of phone service I can expect in the greater metro Phoenix area with Tmobile...
1. Correct me if I am wrong: The RAZR i phone cannot use the 1700 3G band that TMobile uses in the U.S. The RAZR i instead uses the 1900 3G band for 3G access, which Tmobile is slowly upgrading their towers to in the U.S. Within the greater metro Phoenix area, what kind of phone data service will I receive? More specifically, I live near Gilbert Road and McDowell Road. What kind of coverage and data speed will I get in that part of Mesa with the RAZR i on the Tmobile network?
2. The RAZR i comes with Android 4.0.4. I know that some people, in some countries outside the U.S. are getting OTA updates to newer versions of Android for their RAZR i phones. Living in Mesa, Arizona, can I get an OTA upgrade to a new version of Android on my RAZR i? If I cannot immediately update to a newer version of Android, when can I expect an upgrade to a newer version of Android? Is there any way to speed up the process of receiving a new version of Android on the RAZR i?
3. I am reading that the RAZR i has excellent battery life when the user mostly focuses on actually talking on the phone. For heavy data-users, the phone's battery life is mediocre. Is that true? Does the phone quickly use battery power when it is frequently pulling data?

greymarch said:
I live in Mesa, Arizona. I bought the Motorola RAZR i XT890, and signed-up for Tmobile service. I should receive the phone this afternoon. I have some questions about the phone and what kind of phone service I can expect in the greater metro Phoenix area with Tmobile...
1. Correct me if I am wrong: The RAZR i phone cannot use the 1700 3G band that TMobile uses in the U.S. The RAZR i instead uses the 1900 3G band for 3G access, which Tmobile is slowly upgrading their towers to in the U.S. Within the greater metro Phoenix area, what kind of phone data service will I receive? More specifically, I live near Gilbert Road and McDowell Road. What kind of coverage and data speed will I get in that part of Mesa with the RAZR i on the Tmobile network?
2. The RAZR i comes with Android 4.0.4. I know that some people, in some countries outside the U.S. are getting OTA updates to newer versions of Android for their RAZR i phones. Living in Mesa, Arizona, can I get an OTA upgrade to a new version of Android on my RAZR i? If I cannot immediately update to a newer version of Android, when can I expect an upgrade to a newer version of Android? Is there any way to speed up the process of receiving a new version of Android on the RAZR i?
3. I am reading that the RAZR i has excellent battery life when the user mostly focuses on actually talking on the phone. For heavy data-users, the phone's battery life is mediocre. Is that true? Does the phone quickly use battery power when it is frequently pulling data?
Click to expand...
Click to collapse
I do not live in Phoenix area, but in the Portland, OR area.
I get 3G/"4G" with T-mobile (HSPA+) here, although I have a prepaid plan and use data only if I do not have acces to wifi and really need access.
I still have not recived my JB upgrade, but I am told I should get it OTA by end of March. OTA works here in the US, I know it because I got a small update/patch this way back in November. There is no way to speed up teh OTA process - we have to wait (unless you want to root your device and upgrade manually; I have not done that and cannot because of my company's policy).
So far I am very happy with the battery life. I never really measured it (others did), but with wifi on ~2 hours a day and phone on all the time I get 2 days out of it. Way better than my previous 2 Android phones. I do not turn on data a lot, so I cannot tell you how battery life is in that case.
It is well build and I like the screen and how compact the whole solution is (form factor).
Only thing I do not like is that they mounted the internal storage as "/sdcard" as opposed to the external card (at least in ICS). Many apps automatically install on /sdcard. and therefore I cannot install some games (most storage already gone because of my navigation SW and more importantly maps). Apparently this has not been solved in JB.

You can't get 4G 'cause according to some people here there is no LTE chip in the Razr i.
Even with heavy usage here in Europe I get one solid day with the Razr i so that is very good.
And I don't see the problem with the 1700 MHz? I'm on T-Mobile Netherlands which also uses the 1700 MHz band and never had any problem up till now with the Razr i.

Vistaus said:
You can't get 4G 'cause according to some people here there is no LTE chip in the Razr i.
Even with heavy usage here in Europe I get one solid day with the Razr i so that is very good.
And I don't see the problem with the 1700 MHz? I'm on T-Mobile Netherlands which also uses the 1700 MHz band and never had any problem up till now with the Razr i.
Click to expand...
Click to collapse
You can actually get T-Mobile US HSPA+ (T-Mobile's first version of 4G) if you live in a Refarmed area.
http://www.airportal.de/
Here is a map.

Yeah, but that is not "4G" technically because 4G is technically LTE. HSPA+ is sometimes called 4G but that's wrong because 4G really is LTE.

LTE isn't 4G
Enviado desde mi XT890 usando Tapatalk 2

Vistaus said:
You can't get 4G 'cause according to some people here there is no LTE chip in the Razr i.
Even with heavy usage here in Europe I get one solid day with the Razr i so that is very good.
And I don't see the problem with the 1700 MHz? I'm on T-Mobile Netherlands which also uses the 1700 MHz band and never had any problem up till now with the Razr i.
Click to expand...
Click to collapse
The RAZR i cannot use the 1700 MHZ. The phone cannot detect that band. Here are the specs for the RAZR i:
http://www.gsmarena.com/motorola_razr_i_xt890-4998.php
If you are getting Tmobile reception in the Netherlands, it's because you are on a different band. You cannot get the 1700 band on the RAZR i.

HSPA+ is 3.5G... right?
BTW, I'm curious about what firmware do you have... because by this time only the Retail EU and SFR France are the only ones that have JB, I using my RAZR i in Telcel, so basically the 3G frequencies are the same as AT&T and when I had the Defy and the Cliq XT, both from T-Mobile i got EDGE speeds... so, I don't know if you gonna get 3G on your area.. i don't know...

joel_sinbad said:
HSPA+ is 3.5G... right?
BTW, I'm curious about what firmware do you have... because by this time only the Retail EU and SFR France are the only ones that have JB, I using my RAZR i in Telcel, so basically the 3G frequencies are the same as AT&T and when I had the Defy and the Cliq XT, both from T-Mobile i got EDGE speeds... so, I don't know if you gonna get 3G on your area.. i don't know...
Click to expand...
Click to collapse
I have the following firmware on my RAZR i:
81.5.39001.XT890.Retail.en.GB
I am on Android 4.0.4. I check frequently for updates, and have yet to receive an update.
I received horrible voice and data connection with Tmobile from my home, so I switched to the AT&T GoPhone monthly plan. I get good voice and data connections with AT&T from my home.
My RAZR i definitely receives HPSA+ speeds at my home on Mesa, Arizona. At my home, my phone always shows a "H+" in the notification area. I use the app RF Signal Tracker to determine my connection. According to RF Signal tracker, I am on HPSA+ from my home in Mesa, Arizona.

greymarch said:
I have the following firmware on my RAZR i:
81.5.39001.XT890.Retail.en.GB
I am on Android 4.0.4. I check frequently for updates, and have yet to receive an update.
I received horrible voice and data connection with Tmobile from my home, so I switched to the AT&T GoPhone monthly plan. I get good voice and data connections with AT&T from my home.
My RAZR i definitely receives HPSA+ speeds at my home on Mesa, Arizona. At my home, my phone always shows a "H+" in the notification area. I use the app RF Signal Tracker to determine my connection. According to RF Signal tracker, I am on HPSA+ from my home in Mesa, Arizona.
Click to expand...
Click to collapse
Then,,, if you want you just can unlock your bootloader, then flash any firmware that have the JB update available and Tadaaa... JB on your phone, but, if you care about your phone for warranty purposes on the future, wait for the JB OTA on your current firmware.

greymarch said:
The RAZR i cannot use the 1700 MHZ. The phone cannot detect that band. Here are the specs for the RAZR i:
http://www.gsmarena.com/motorola_razr_i_xt890-4998.php
If you are getting Tmobile reception in the Netherlands, it's because you are on a different band. You cannot get the 1700 band on the RAZR i.
Click to expand...
Click to collapse
T-Mobile Netherlands uses 1700 MHz and I'm getting reception via *that* band.

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Can someone confirm to me if RAZR i has LTE ????? I saw in many forums people screen shoting their homes with a big and beautiful LTE in system tray.

LTE not working on Sprint (Fix?) [11/16]

The following is my understanding of the problem. If any corrects or updates need to be made just post and I will update the OP.
Many N5 users are on Sprint noticing that they are not connecting to LTE. The key here is that the N5 is a single radio Triband LTE CDMA device. There is also a great post that explains everything here (thanks LordLugard) and technical pros and cons as well as nice information on the current state of the network are on post #8.
From the s4gru post:
In previous Sprint LTE phones, when a device was in Sprint LTE coverage it would park in both the LTE and CDMA Sprint networks at the same time. When a voice call came in, it would just go straight through to the device. And signal to the LTE network would be maintained the whole time while the call was active.
In contrast, a Sprint Triband LTE device can only stay on one technology at a time. CDMA or LTE, not both. So when a Sprint LTE Triband device is in Sprint LTE coverage it parks only in LTE. And doing so means it cannot transmit calls or text without Circuit Switched Fallback (CSFB) on the network side. CSFB and eCSFB (Enhanced Circuit Switched Fallback) are network controls that will allow a single mode/single path network to operate in two modes, both CDMA and LTE.
Here is how it works in the simplest way I can describe. When your Triband LTE device has an LTE signal, it cannot receive or make calls/texts on its own. It is just using LTE data happily. However, what if someone calls or texts you? How does it get through the CDMA network to your device? Via CSFB.
When the Sprint network tries to forward a call/text to your device but cannot see it via CDMA, it then checks for an LTE connection to your device. If it sees one, it tells your device to disconnect from LTE for a moment and reconnect to CDMA. Your device then jumps over to take the call or text on Sprint CDMA and the LTE session is interrupted. This happens very fast and seamlessly. Except for the loss of data availability. If it is just a text, the data session is only interrupted for fractions of a second and is likely not even noticed by the user...
...much of Sprint’s legacy network either doesn’t support Circuit Switched Fallback or doesn’t support it in cases where the legacy network equipment is by a different manufacturer than the new Network Vision equipment.
Click to expand...
Click to collapse
So in other words your N5 cannot get phone calls and texts when using LTE while on old crappy legacy towers so it keeps you on 3G.
Warning, I am not responsible for any problems following this advice or code causes. In fact I suggest you stop reading, close your browser and never come back to XDA.
But wait there's a fix!!!
Well not really... but kinda. Type *#*#4636#*#* into your phone dialer and then go to Phone information. From here you can set preferred network type. Choose LTE/GSM/CDMA auto (PRL) (in rare cases LTE only (PRL) maybe required). Now you will auto connect to LTE if it is available. The problem is that if your on a legacy tower you will not receive texts or phone calls when on LTE. It's easy enough to switch between LTE/CDMA auto (PRL) and LTE/GSM/CDMA auto (PRL) on the fly but that's no solution, it just builds the hatred in your blood.
Update - This app is not needed but will be left up. See update 2.
I've built a really simple app to help with this. All the app does is put the above code into your clipboard and launch your dialer. You can then just paste and it will launch the Tester/PhoneInfomation of your phone.
Full source here. The apk is also in the repo.
Update 2
No Dialer codes need. Just install this app and it will launch the activity you need. Credit to DMX31 for posting this link I this thread.

I haven't had any issues so far with LTE (sending texts, making and receiving calls) on my Nexus 5 and i'm in a spark launch city.
I'm not even going to pretend to understand half of what's being discussed because I don't care enough...

I have a lte tower right by my house and can't conext to lte on my n5. 4 other phones connect just fine cause it's a strong signal. Called sprint and they said it's a known problem. This is ridiculous. If it's not fixed by my 14 days it's going back. Can't stand not having lte
Sent from my SPH-L900 using xda premium

This problem effects me, so bad to the point I just sold my N5 and went back to my CM S3. Kudos if you're not having issues, but lots are. The hours on tech support and browsing forums searching for a fix is not worth the effort over a piece of plastic to me with no ETA on when all the towers will be upgraded. Probably months out in my particular area. Happily chugging along on LTE again, maybe I'll try the nexus again next year.

Wait of the n5 is single band lte and sprint is changing their phones to single band to. Shouldn't this be a problem soon to go away?
Sent from my SPH-D710 using Tapatalk

It's only a problem in some markets. No issues where I am, for example, but in Chattanooga where I will be moving, the towers are only 4G accepted, not 3G/4G (from what I hear). This problem should be going away for anyone in completed 3G markets soon, and for markets that are not 3G accepted, Sprint should be ramping up the pace of the completions through vendor incentives.
Sent from my Nexus 5 using Tapatalk

graffix31 said:
Wait of the n5 is single band lte and sprint is changing their phones to single band to. Shouldn't this be a problem soon to go away?
Sent from my SPH-D710 using Tapatalk
Click to expand...
Click to collapse
I think that the key is them updating their towers. I don't know about where you live but that doesn't occur quickly in Raleigh North Carolina.

MinceMan said:
I think that the key is them updating their towers. I don't know about where you live but that doesn't occur quickly in Raleigh North Carolina.
Click to expand...
Click to collapse
The key is Network Vision 3G upgrades so the phone can talk to the eCSFB side of the network. Incumbent vendor regions that are mostly not affected are regions where Alcatel-Lucent took over Lucent and Ericsson took over Nortel. Those should be fine and if there are issues then it's really just a software update on the cell site.
In areas where there's non-incumbent equipment then it's a big deal. Areas taken over such as Motorola will have an issue. Then there are the Samsung vendor regions.
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Every Samsung region is a non-incumbent region (except PR/VI) and are guaranteed to have issues because Samsung is replacing Nortel, Motorola (hard handoffs known for a while - see Chicago), and etc. According to the document I'll quote below the only mitigation for the eCSFB gaps are to actually quickly complete the network rollout / conversion and fire up NV 3G as soon as possible so Tri-Band devices can actually talk to the LTE core and 3G side.
Explains the apparent "lack" of work in Samsung markets but a huge number of sites physically completed. No time for acceptance / integration when you must complete as many sites as possible to mitigate the eCSFB gaps.
Sprint eCSFB Gap Issue Legal Approved Talking Points:
eCSFB Gap Talking Points
Sprint’s Network Vision Plan (Spectrum)
Sprint’s Network Vision plan includes access to three spectrum bands, (1.9, 800 and 2.5), and LTE handsets with a single radio.
Access to diverse spectrum assets allows Sprint to maximize capacity and coverage.
Current Sprint LTE Devices (2 Radios)
Current Sprint LTE devices are Simultaneous Voice and LTE (SVLTE)—using two radios, one for voice and one for LTE data. This allows CDMA calls and LTE to operate at the same time.
Dual Radio SVLTE devices can degrade the user’s quality of experience – two antennas may slow throughput at the cell edge and reduce battery life.
Future Sprint LTE Devices (1 Radio)
CSFB and eCSFB (Circuit Switch Fall Back and enhanced Circuit Switch Fall Back) are features that enable single radio functionality in the handset.
eCSFB Benefits:
With eCSFB implementation, Sprint will be able to offer fast LTE data speeds and 3G voice supported on single radio devices. This provides a more cost effective option for Sprint’s long-term business plans to support additional spectrum bands.
eCSFB is expected to improve handset battery life compared to SVLTE.
eCSFB Gap Issue – What you Need to know:
Smart devices require eCSFB to “fall back” to 3G to accept a voice call if the user is connected to the LTE network.
All markets need to be upgraded with eCSFB capability.
eCSFB Gaps are only in non-incumbent markets where a site has 4G LTE and no 3G upgrade.
4G LTE integration with 3G is different by OEM type:
Incumbent markets – LTE 4G only sites can communicate with either legacy 3G or NV 3G sites.
Non-Incumbent – LTE 4G can only communicate with NV 3G sites; so individual sites need both NV upgrades.
LTE devices – Customer Experience
When 4G LTE is deployed in a non-incumbent market on sites without upgrade to 3G service, there is a gap.
Existing Devices – No Impact
eCSFB Devices – Phone becomes 3G only device
Non-Launched Markets
No coverage visible on Sprint.com maps but different experience for users with existing devices versus new eCSFB devices.
Launched Markets
Sprint coverage tools will display LTE coverage. For new LTE smart device users this could be confusing since they would expect LTE and 3G coverage with the device they purchased, but would not experience LTE until the 3G network is upgraded.
Mitigation plan:
New LTE Markets
When locking new LTE markets for announcement/ launch, eCSFB deployment status will be a factor in the analysis. New LTE markets will not be announced unless the eCSFB gap risk is low.
Complete the build quickly in eCSFB gap impacted markets.
Acronyms
CSFB – Circuit Switch Fall Back. It allows for single radio devices. (ERC)
eCSFB – Enhanced Circuit Switch Fall Back Next generation CSFB. (ALU, STA)
SVLTE – Simultaneous Voice & LTE. Allows CDMA calls and LTE to operate simultaneously
Incumbent – An incumbent market is one in which the OEM stays the same as before Network Vision
Non-incumbent – A market in which the OEM changes as well as all of the equipment.
ERC - Ericsson
ALU – Alcatel Lucent
STA - Samsung
NV – Network Vision
OEM – Original Equipment Manufacturer (ERC, ALU, STA)
Gap – 4G LTE on sites without appropriate upgrades to 3G service
1.9 GHz Spectrum - Provides initial capacity and coverage for voice and data services.
800 MHz Spectrum - Improves coverage and in-building penetration for all services.
2.5 GHz Spectrum - Increases data capacity to support higher data demands and more users.
Click to expand...
Click to collapse

^^this. To the OP, this is only a temporary problem, as it is not in Sprint's future plan to keep any markets in a eCSFB gap. This is just an unfortunate side-effect of the rollout not being finished.
Sent from my Nexus 5 using XDA Premium 4 mobile app

squshy 7 said:
^^this. To the OP, this is only a temporary problem, as it is not in Sprint's future plan to keep any markets in a eCSFB gap. This is just an unfortunate side-effect of the rollout not being finished.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
RANT:
Temporary yes but really what does that mean. I'm guessing maybe between 1-2 years? By the time it's fixed in my area I might not even have this phone any longer. Their network has been a mess for years and I'm paying good money for this crap.

Is this related to my data dropping completely by any chance? I can connect to 3G and 4G fine, but after a random amount of time the data connecting just disappears but I can still make calls and send texts.
The Nexus 5 is a great phone, but I'm finding this whole situation pretty frustrating so far.

persibro said:
Is this related to my data dropping completely by any chance? I can connect to 3G and 4G fine, but after a random amount of time the data connecting just disappears but I can still make calls and send texts.
The Nexus 5 is a great phone, but I'm finding this whole situation pretty frustrating so far.
Click to expand...
Click to collapse
I have not experienced that and it doesn't sound like the same problem to me...

The easiest way(for me) to toggle between networks is this app
https://play.google.com/store/apps/details?id=de.mangelow.network&hl=en
No dialer codes needed.

So here's something that's happening to me. I'll send a message and it'll be stuck on sending. BUT. If I place a call and let it connect then hang up the text will go through fine. I'm in Dallas and have LTE almost everywhere but my house lol. Sometimes i'll get LTE upstairs at my house.
I can also remember doing this on my Evo 3D around September-November 2011

S4GRU Nails it..
This article from S4GRU says it all.
http://s4gru.com/index.php?/blog/1/...-due-to-circuit-switched-fallback-technology/

LordLugard said:
This article from S4GRU says it all.
http://s4gru.com/index.php?/blog/1/...-due-to-circuit-switched-fallback-technology/
Click to expand...
Click to collapse
Lord: Thanks for that link. That was about the best, most comforting information I've read in a long time and helps to clarify the issue.

chugger93 said:
Lord: Thanks for that link. That was about the best, most comforting information I've read in a long time and helps to clarify the issue.
Click to expand...
Click to collapse
You're welcome.

LordLugard said:
This article from S4GRU says it all.
http://s4gru.com/index.php?/blog/1/...-due-to-circuit-switched-fallback-technology/
Click to expand...
Click to collapse
Interesting...Thanks for this. I wonder if lack of CSFB in one's market would be grounds for waiving the ETF...
Sent from my EVO LTE

MinceMan said:
But wait there's a fix!!!
Well not really... but kinda. Type *#*#4636#*#* into your phone dialer and then go to Phone information. From here you can set preferred network type. Choose LTE/GSM/CDMA auto (PRL). Now you will auto connect to LTE if it is available. The problem is that if your on a legacy tower you will not receive texts or phone calls when on LTE. It's easy enough to switch between LTE/CDMA auto (PRL) and LTE/GSM/CDMA auto (PRL) on the fly but that's no solution, it just builds the hatred in your blood.
Click to expand...
Click to collapse
When I go into *#*#4636#*#* and force LTE Only in Phone info, the radio indicator in the notification area shows me as having four bars of LTE, but the Current network indicator stays in the Searching for Service state and never progresses past this point.
I am however, able to run a ping test on that screen, and while both the "ping hostname" and "http client test" pass, the "ping ipaddr" test fails with "IP addr not reachable".
Is this what others are experiencing as well in markets where you have to force LTE?

@geoff2k Yes to all.
Sent from my Nexus 5 using XDA Premium 4 mobile app

Sprint spark now active in Houston

Hello everyone
I have found one tower in the Houston area that is pumping out spark speeds. 290 just past Hollister near the panera bread I got download speeds of over 65mbps!
I have to say at first I laughing at spark when they said 100mbps or more..I figured oh great this will take another 9 years to see it but I'm sure if it was the middle of the night and not during rush hour I would have gotten over 100mbps easily..
Let's post any other spark tower locations if you guys find them
http://www.speedtest.net/my-result/a/724943118

deakelem said:
Hello everyone
I have found one tower in the Houston area that is pumping out spark speeds. 290 just past Hollister near the panera bread I got download speeds of over 65mbps!
I have to say at first I laughing at spark when they said 100mbps or more..I figured oh great this will take another 9 years to see it but I'm sure if it was the middle of the night and not during rush hour I would have gotten over 100mbps easily..
Let's post any other spark tower locations if you guys find them
http://www.speedtest.net/my-result/a/724943118
Click to expand...
Click to collapse
you got this on the nexus 5? i thought it required the update and not just enabling the bands through LTE engineering menu.

nandowong said:
you got this on the nexus 5? i thought it required the update and not just enabling the bands through LTE engineering menu.
Click to expand...
Click to collapse
Yes n5 and yea I enabled triband after I got my msl. A profile update in the future will do the same. Google how to enable triband on nexus 5 for sprint and that's the guide I used. I don't have the link on me right now.
Cheers

nandowong said:
you got this on the nexus 5? i thought it required the update and not just enabling the bands through LTE engineering menu.
Click to expand...
Click to collapse
An update is required but I figured out (by a miracle mistake) that enabling the bands and then cycling PRL update and profile update would let you connect to B41... that is until you restart your phone and have to do another PRL + profile update.
So yeah... spark update is still required.

lilotimz said:
An update is required but I figured out (by a miracle mistake) that enabling the bands and then cycling PRL update and profile update would let you connect to B41... that is until you restart your phone and have to do another PRL + profile update.
So yeah... spark update is still required.
Click to expand...
Click to collapse
after enabling the bands if you do a profile update it will change the priorities of the bands but should still leave all bands enabled. sprint never touches the ota's so a software update wouldnt be able to change it id assume only a profile update will change it.. prl should only change the prl not your engineering profile settings.
test it out.. enable the other 2 bands and find spark tower ill post a pic after work of the towers and attachments

lilotimz said:
An update is required but I figured out (by a miracle mistake) that enabling the bands and then cycling PRL update and profile update would let you connect to B41... that is until you restart your phone and have to do another PRL + profile update.
So yeah... spark update is still required.
Click to expand...
Click to collapse
The PRL didn't help. The update profile rebooted the phone and prioritized the bands to
1
0
1
So that is no good.
With that said I am still setting at Jones and Louetta and have ye to see Spark on my N5.

reddragon72 said:
The PRL didn't help. The update profile rebooted the phone and prioritized the bands to
1
0
1
So that is no good.
With that said I am still setting at Jones and Louetta and have ye to see Spark on my N5.
Click to expand...
Click to collapse
No wimax towers in that area of Houston has been converted to B41 TDD-LTE which is why you don't get "Spark".

lilotimz said:
No wimax towers in that area of Houston has been converted to B41 TDD-LTE which is why you don't get "Spark".
Click to expand...
Click to collapse
So why do they show the map for coverage lol. And how can you tell? Must be a site that lists it I take it.
Oh and what the heck is this Turbo crap lol

lilotimz said:
No wimax towers in that area of Houston has been converted to B41 TDD-LTE which is why you don't get "Spark".
Click to expand...
Click to collapse
you really think 1.9ghz band is pumping out 80+mbps?

reddragon72 said:
The PRL didn't help. The update profile rebooted the phone and prioritized the bands to
1
0
1
So that is no good.
With that said I am still setting at Jones and Louetta and have ye to see Spark on my N5.
Click to expand...
Click to collapse
set the bands to
0
0
1
and reboot, after the reboot view the priorities by clicking edit not view, i noticed that view shows different info that edit sometimes.. i know i know weird
mine is still set to
0
0
1 after reboots but profile updates make it go back to 1 0 1

reddragon72 said:
So why do they show the map for coverage lol. And how can you tell? Must be a site that lists it I take it.
Oh and what the heck is this Turbo crap lol
Click to expand...
Click to collapse
Sprint LTE maps... I laugh at them and you should too. Overstates coverage for everything though it is getting a little bit more accurate with LTE 800 being deployed but it's still a crapshoot. Look at the 1x map and then decrease it a little bit and you'll have the LTE coverage map as PCS LTE is always weaker than 1xRTT 1900.
I, and a very few select others over @ s4gru.com, have access to to a very recent engineering map from clearwire that has what sites are live as part of the Phase 1 TDD-LTE deployment and deployment schedules (& time frames) for some markets.
Some of us have been actually running around Phase 1 sites (Phase 2A {1st half 2014} are just beginning) getting engineering screens. In fact I just went to another one just a 2 hours ago...
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[311-490 / 311-870 = TDD-LTE B41, 310-120 = PCS LTE or eSMR LTE]
No one actually is sure what exactly the turbo area is. We assume it's just areas where the actual Band 41 sites got upgraded backhaul to spit out the 50-60 mbps peak speeds. Many sites are still running on old clearwire wimax backhaul which tops at 10-20 mbps per sector.

lilotimz said:
Sprint LTE maps... I laugh at them and you should too. Overstates coverage for everything though it is getting a little bit more accurate with LTE 800 being deployed but it's still a crapshoot. Look at the 1x map and then decrease it a little bit and you'll have the LTE coverage map as PCS LTE is always weaker than 1xRTT 1900.
I, and a very few select others over @ s4gru.com, have access to to a very recent engineering map from clearwire that has what sites are live as part of the Phase 1 TDD-LTE deployment and deployment schedules (& time frames) for some markets.
Some of us have been actually running around Phase 1 sites (Phase 2A {1st half 2014} are just beginning) getting engineering screens. In fact I just went to another one just a 2 hours ago...
[311-490 / 311-870 = TDD-LTE B41, 310-120 = PCS LTE or eSMR LTE]
No one actually is sure what exactly the turbo area is. We assume it's just areas where the actual Band 41 sites got upgraded backhaul to spit out the 50-60 mbps peak speeds. Many sites are still running on old clearwire wimax backhaul which tops at 10-20 mbps per sector.
Click to expand...
Click to collapse
Hmmm Interesting.. Thanks for the info I have no clue what turbo is.. Sounds very 80sish haha.
Im convinced that at after hours that cell site would push much more than 70mbps like I got earlier.. All the office buildings nearby including my office cause some congestion.. I just still have a hard time believing 1.9 has that throughput alone
Only site I've found around that has those speeds and not sure it matters but I'm running .15 modem

deakelem said:
Hmmm Interesting.. Thanks for the info I have no clue what turbo is.. Sounds very 80sish haha.
Im convinced that at after hours that cell site would push much more than 70mbps like I got earlier.. All the office buildings nearby including my office cause some congestion.. I just still have a hard time believing 1.9 has that throughput alone
Only site I've found around that has those speeds and not sure it matters but I'm running .15 modem
Click to expand...
Click to collapse
Anything over 37.5/12 is B41 TDD-LTE (aka spark) as LTE 800 / 1900 runs 5x5 mhz FDD-LTE and are incapable of going over the aforementioned.

lilotimz said:
Anything over 37.5/12 is B41 TDD-LTE (aka spark) as LTE 800 / 1900 runs 5x5 mhz FDD-LTE and are incapable of going over the aforementioned.
Click to expand...
Click to collapse
Tomorrow I'm gonna do some.speedtest after I disable both bands and only use 1.9 I want to see if that has any affect. Also take some pictures of the tower.. Its a tiny tower with only a few panels small panels too doesn't look like it's providing any 3g/CDMA either judging by my weak 3g strength

deakelem said:
Tomorrow I'm gonna do some.speedtest after I disable both bands and only use 1.9 I want to see if that has any affect. Also take some pictures of the tower.. Its a tiny tower with only a few panels small panels too doesn't look like it's providing any 3g/CDMA either judging by my weak 3g strength
Click to expand...
Click to collapse
I confirmed using the engineering screen that that tower mentioned in the op is putting out 41
My phone was connected to band 41 and pushing 70mbps

I just came off a 10 day roadtrip over the southeast, including 4 days in the Tampa market. I tried prl updates with the suggested settings, but never could get Spark like speeds or even connect on band 41. Funny think was that the fastest Sprint speeds I found were at my house in the central Arkansas area. Coverage is really bad here on Sprint, but I live next to a tower getting 32/8 on 1900.

I have found a way to consistently connect to band 41 lte aka spark. It is risky though. By flashing the .15 radio and enabling all the bands with band 41 as the first priority you can connect much more easily. The downfall is that on sites without an e/CSFB upgrade which tells your phone to fall back to 3g for a call, it won't kick you off lte so you could be unknowingly without service but you'll have LTE data. More can be found on this at s4gru but I thought I'd let you guys know about the .15 baseband.

Can someone find which towers are spark active in Wichita Kansas?
Sent from my Nexus 5 using xda app-developers app

THEGAMEPLAY94 said:
I have found a way to consistently connect to band 41 lte aka spark. It is risky though. By flashing the .15 radio and enabling all the bands with band 41 as the first priority you can connect much more easily. The downfall is that on sites without an e/CSFB upgrade which tells your phone to fall back to 3g for a call, it won't kick you off lte so you could be unknowingly without service but you'll have LTE data. More can be found on this at s4gru but I thought I'd let you guys know about the .15 baseband.
Click to expand...
Click to collapse
This is exactly how I got the 41 band near work. .15 modem with all bands enabled priority 0 0 1.
Fortunately there are less and less towers not ecsfb