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[Q] Droid 3 GSM Roaming

Hello,
I have the Droid 3 with Verizon, unlocked, with verizon vodafone sim activated. I am currently in Canada, and am wondering why it will not connect to GSM/HSDPA towers.
If I go into the wireless and networks -> mobile networks -> Operator selection the phone will show me Rogers 2G, Rogers 3G, Bell, and Telus networks.
I also get this error for all three in the drop down menu, the name just changes:
No service
Selected network (CAN Rogers wireless inc. 3g) unavailable.
I have all the APN's entered for all three of those carriers, and can select them with an application named APN Manager, however none of those APN's show up in my wireless and networks -> mobile networks -> access point names. Both the vodafone APN's are unselected though.
I am looking to get on this GSM/HSDPA network, as when I am out in the country there is only 1x dial up internet on CDMA, and HSDPA available in the country.
If anyone can help me out, let me know!
Thanks much, in advance!

I have posted this exact same question at Howardforums. Here is the link to that thread:
/showthread.php/1736801-Q-Droid-3-GSM-Roaming
You will have to first go to howardforums website, then add the above part
Forgot to mention: I tried a Rogers and a Telus sim card and they both got calling service.

Not sure if Verizon has roaming agreement with any of the Canadian GSM networks. You can roam using CDMA here without any problem. I believe Telus is backing up Verizon here when it comes to CDMA.
If you want to use GSM you can put a SIM from any of the operators here (except AWS ones) and you will be fine since you have unlocked phone. Cheaper to use too, of course if using local SIM is an option for you. If you will be using local SIM you will need to define APNs or you won't get data connection. Head over Google for the settings for each of the operators here (Canada)
Sent from my DROID2 GLOBAL using Tapatalk

leobg said:
Not sure if Verizon has roaming agreement with any of the Canadian GSM networks. You can roam using CDMA here without any problem. I believe Telus is backing up Verizon here when it comes to CDMA.
If you want to use GSM you can put a SIM from any of the operators here (except AWS ones) and you will be fine since you have unlocked phone. Cheaper to use too, of course if using local SIM is an option for you. If you will be using local SIM you will need to define APNs or you won't get data connection. Head over Google for the settings for each of the operators here (Canada)
Sent from my DROID2 GLOBAL using Tapatalk
Click to expand...
Click to collapse
Thanks Leobg. I believe you are right that there is no roaming agreement for GSM, which makes sense. Verizon lady told me otherwise
This phone is going back though, as I was looking for some HSPA while in the country.

I was using Droid3 and Droid4 with Mexican SIMS, IUSACEL and TELCEL without problem. Now Im at Canada and Rogers SIM doesnt work on both phnes. I guess they are locked, can you describe me how to unlock where i do purchase unlocking codes?

reply
If you are on a contract with Verizon, you can ask them for unlock code,
Insert a sim card which it ain't accepting, enter the unlock code and its done.
Don't forget --- Settings -> Wireless & Networks -> Mobile Networks -> Network Mode -> GSM/UMTS
But I believe once unlocked, Verizon doesn't work on it.

It sounds like the SIM. Or try switching to CDMA. I think the Canadian carriers still have CDMA on their towers (used to a few years ago) and maybe that's the roaming the lady means.

[Q] big question

I have a question i just got my phone an it rooted first i need to known where is the folder for the bookmarks on the stock browser also where is the folder that has all the ringtones on the phone and where is the folder for the apk files that you download from like the market and ia there any othwr way to unlock your phone other them talking to verzion so you can usw your phone on any network or use any sim card

Your phone is cdma/lte. You cannot unlock it to use sim cards from gsm networks as it lacks a gsm radio. Likewise, you cannot use it on other lte networks as not all "flavors" of lte are the same (ie, different frequencies). At best, you would only be able to use it as a 3G phone on a cdma Carrier such as cricket and even then its functionality would be limited.

The big CDMA boys (i.e. Sprint and Verizon) will not let you move their phones between each other. Sprint will absolutely not allow you to activate a Bionic on their network without you doing illegal stuff. And it wouldn't work anyway because Verizon's 4G phones require a SIM for texts and calls. This SIM is not like the GSM SIMs on AT&T and T-Mobile. The Bionic is locked to Verizon.
You can search for the other stuff. I believe ringtones are in /system/media.

Verizon Moto X on T-mobile

Hi,
Currently with Big Red but will switch to "someone" once contract is up 3rd qtr next year. Most probably because of the the price and I am sick of VZ dropping back to 3G most of the time where I am.
If I get a Verizon Moto X can I later use that on TMobile. And/rather, a Verizon Moto X can be used on which carriers - all or none
much appreciated.

If it's a developer edition then "I believe" you could use it on sprint. T-Mobile is a GSM carrier and since the only option on the CDMA phones is for global GSM for international travel that you will likely not get it to work. They don't have the radios in it to work on T-mobile. Someone correct me if I'm wrong.

themogul said:
Hi,
Currently with Big Red but will switch to "someone" once contract is up 3rd qtr next year. Most probably because of the the price and I am sick of VZ dropping back to 3G most of the time where I am.
If I get a Verizon Moto X can I later use that on TMobile. And/rather, a Verizon Moto X can be used on which carriers - all or none
much appreciated.
Click to expand...
Click to collapse
This has been covered before yes it will. Verizon moto x is ( might be wrong) the only phone that is Sim unlocked besides T-Mobile and gsm developer edition. Tmobile Sim should work just fine.
http://forum.xda-developers.com/showthread.php?t=2442735
Sent from my XT1060 using xda app-developers app

mawells787 said:
This has been covered before yes it will. Verizon moto x is ( might be wrong) the only phone that is Sim unlocked besides T-Mobile and gsm developer edition. Tmobile Sim should work just fine.
http://forum.xda-developers.com/showthread.php?t=2442735
Sent from my XT1060 using xda app-developers app
Click to expand...
Click to collapse
I put a prepaid T-Mobile sim into my Dev Verizon Moto X, and I get good LTE speeds.

folsom68 said:
I put a prepaid T-Mobile sim into my Dev Verizon Moto X, and I get good LTE speeds.
Click to expand...
Click to collapse
Just seconding that I put a T-Mobile SIM in to my VZW dev edition Moto X (4.4), and it was SIM unlocked as expected, but also had good LTE signal, indicating that Band 4 is definitely enabled on these phones, contrary to published specs. Good news!

Can you make phone calls and send text messages with a T-Mo SIM in a VZW phone? Seems as if a CDMA phone would not work on a GSM network for calls and texts.
Sent from my Nexus 7 using Tapatalk

scottjb said:
Can you make phone calls and send text messages with a T-Mo SIM in a VZW phone? Seems as if a CDMA phone would not work on a GSM network for calls and texts.
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
Yes. I haven't done it with the Moto X yet, but I did it without issue previously with both the Verizon S4 and LG G2. It's part of an FCC agreement when Verizon got LTE. It's basically GSM unlocked. Data, text, and calls work.
Sent from my XT1060

scottjb said:
Can you make phone calls and send text messages with a T-Mo SIM in a VZW phone? Seems as if a CDMA phone would not work on a GSM network for calls and texts.
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
Most Verizon LTE phones have a GSM radio and work on AT&T and Tmobile

I made a call to verify it works, and I received text messages from T-Mobile.
I also didn't have to add APNs, it seemed to figure them out.

Sprint won't work. Cause most of the CDMA bands and LTE bands are different.
Sent from my XT1056 using Tapatalk
---------- Post added at 08:06 PM ---------- Previous post was at 08:05 PM ----------
But I'm pretty sure T-Mobile will cause it is Sim unlocked
Sent from my XT1056 using Tapatalk

supr2nr said:
If it's a developer edition then "I believe" you could use it on sprint. T-Mobile is a GSM carrier and since the only option on the CDMA phones is for global GSM for international travel that you will likely not get it to work. They don't have the radios in it to work on T-mobile. Someone correct me if I'm wrong.
Click to expand...
Click to collapse
Yes, you are wrong. It does work with either a "retail" Verizon phone, or developer edition.
The big misconception is that since Verizon uses CDMA for voice and sms, that their phones only work on CDMA. This is NOT True.
Because Verizon's 4G LTE phones are "global" they support the same GSM/GPRS/Edge bands as ATT and T-Mobile for voice and data so they can be used globally on GSM carrier networks. Another little plus is that due to the FCC rules around their 700Mhz spectrum, they are SIM unlocked, so they happen to work with ATT and T-Mobile sim inserted. Since ATT uses the same bands for HSPA and HSPA+ as they do for EDGE, you can get HSPA speeds. In areas where T-Mobile's "network modernization" has refarmed their 1900Mhz edge to HSPA, you'll get HSPA speeds. In Tmobile areas that HSPA is still over AWS, you'll fall back to Edge when trying Verizon branded devices.
Using both developer and "retail" variants of the Verizon Moto X, I have inserted my T-Mobile SIM and had it work after setting the phones to "global". I've done the same with my iPhone 5, iPhone 5S, Blackberry Z10, Q10, Nokia Lumia 928, and Samsung Galaxy S4 and Note 3. Some of the phones, like the Z10 and 928 only gave me EDGE speeds the last time I tried them. The X and S4 have given me HSPA. T-Mobile recently rolled out LTE here, as putting the T-Mo Sim in my VZW iPhne 5S last week gave me T-Mo LTE for the first time. When i get time I'll have to go back and test my other devices again to see what they do.
With recent firmware updates on my X, note 3 and Galaxy S4, I have had to manually enter T-Mobile APN settings to get them to work.
scottjb said:
Can you make phone calls and send text messages with a T-Mo SIM in a VZW phone? Seems as if a CDMA phone would not work on a GSM network for calls and texts.
Click to expand...
Click to collapse
Yes it does work as long as the APN settings come down automatically to your phone, or you manually enter the correct APN settings.
On a side note... some have asked if you can do the same with a Sprint phone (since they are cdma based too). The answer is..I don't know for sure, but it really depends. I haven't looked into the sprint phones to know their "global roaming" capabilities, and what radios and frequencies their devices support. I guess as long as their phones support the quad band GSM frequencies and are (or can be) SIM Unlocked, then you can do the same with Sprint phones to get at least Edge speeds. HSPA and LTE would again depend on the frequencies the sprint phones support, and the target carrier network uses.

Thank you everybody!!!
This is excellent info and more importantly very good details. I am very grateful...
Time to the Moto X with orange accents now

themogul said:
Hi,
Currently with Big Red but will switch to "someone" once contract is up 3rd qtr next year. Most probably because of the the price and I am sick of VZ dropping back to 3G most of the time where I am.
If I get a Verizon Moto X can I later use that on TMobile. And/rather, a Verizon Moto X can be used on which carriers - all or none
much appreciated.
Click to expand...
Click to collapse
I put a T-mobile SIM in my stock 16GB Verizon Moto x. Here is what works and doesn't.
First off, 4G works! in the South Jersey area and it is Blistering fast, I have exceeded 40MB speed test downloads twice, Several in the high 30s and I am avg in mid 20s. Uploads are averaging 20+/- . Compared to Verizon this is like comparing Fios to 1999 era dial up. the best I ever got on Verizon 4G was 14 download but average between 4 and 9 !
The Network notification switches a lot between 4G, "H" mode, whatever that is, just bars and another which I didn't catch quick enough to read ?
Battery has been amazing compared to my galaxy Nexus, I got 7.5 hours of Actual "Screen on Time" which included some GPS use and an hour of music streaming total phone up time was 34+ hours. How long it will perform like this is anyone's guess, today i got about 6.5 of Screen on time. I hope this inst a trend
Now for the bad news - Using it as a Phone. Incoming calls are fine but, making outgoing is a Pain in the A$$.
When I dial a number, (which is a hassle on this KitKat dialer) it often goes to the home screen or back to the dialer. The Call Fails. I am not sure if my dialer is buggy or its a compatibility problem. the KitKat Dialer on the Moto X is an exorcise in futility. Google are you listening? Why reinvent the wheel. All I want in my Dialer is a Number Pad! and a phone book.
When I Open dialer I see Recent calls up top, the whole middle section says all contacts and is otherwise blank, the bottom has the number pad icon, History and settings dots.
Clicking the number pad icon enlarges the bottom section, which then goes all white and removes the three icons. I have to then click the back arrow and re-click the number pad icon to bring it up the actual dialer. .
At this time I can dial. and then the call always fails on the first attempt. Sometimes it takes several attempts to go through.
When I click send on the dialer the 4G disappears and I am left with just the bars. they come back when call is done but sometimes take a few minutes to do so.
If you Kill the dialer app or swipe it away, coming back to it you will have the same issues when trying to get the number pad (two attempts) if you dont, the number pad will open on first attempt. but the calls will still fail on the first try.
I also cant use the internet when in a call, whether WiFi is on or off. Is this a T-mobile problem? I could use the net in Verizon when in a call when on 4G or WiFi
The Data is set to global mode but I have tried both the other settings. On boot up I get a warning saying the SIM is not recognized which I just swipe away.
I am also having this problem. After making a call, the music player and the phones "volume" aspects cease to work., Meaning, I get no sound out of the phone, Music, notifications alarms etc.. This happens almost every time and the only fix is a reboot
I disabled all Verizon Bloat and a lot of Moto Bloat as well This could be causing some of the bugs? But i have tested several different configurations all with the same outcomes.
Hope this helps and puts an end to the - Will it work or not questions. There seem to be a lot of Net Know it all's that flat out say a Verizon Moto x wont work with a T-Mobile SIM or some other undocumented "fact"

I have the same issues as SOMFW. Disabling LTE resolves all these problems, so it seems like it's an issue with the LTE-to-2G/3G fallback for phone calls.
When I force it into HSPA+, I have both simultaneous voice and data and no dialing issues.

nethead25 said:
I have the same issues as SOMFW. Disabling LTE resolves all these problems, so it seems like it's an issue with the LTE-to-2G/3G fallback for phone calls.
When I force it into HSPA+, I have both simultaneous voice and data and no dialing issues.
Click to expand...
Click to collapse
How did you disable 4G? or Force it into HSPA+? Is there a setting I am missing?
Somebody else mentioned Manually adding T-Mobile APN is this something you did?
On My Moto,x when using the Vz SIM there is an APN labeled Verizon that appears on its own, On the TM SIM it was blank
Also, while on the TM SIM under About Phone / Status My phone number doesn't show, On the Vz SIM it is there and the Dialer works fine. But I still get the Dialer Bug, which is, When I click the Keypad icon the bottom area goes blank and I have to hit the back button and repeat it. This only happens if I swipe the dialer out of running apps list, Force close it or haven't used it for several hours.
Any Ideas?

SOMFW said:
How did you disable 4G? or Force it into HSPA+? Is there a setting I am missing?
Somebody else mentioned Manually adding T-Mobile APN is this something you did?
On My Moto,x when using the Vz SIM there is an APN labeled Verizon that appears on its own, On the TM SIM it was blank
Also, while on the TM SIM under About Phone / Status My phone number doesn't show, On the Vz SIM it is there and the Dialer works fine. But I still get the Dialer Bug, which is, When I click the Keypad icon the bottom area goes blank and I have to hit the back button and repeat it. This only happens if I swipe the dialer out of running apps list, Force close it or haven't used it for several hours.
Any Ideas?
Click to expand...
Click to collapse
These are the steps I used to turn off LTE and enable HSPA:
1) Download/install the app LTE OnOff
2) Change Mobile Network type in Settings to LTE / GSM / UMTS
3) On LTE OnOff, hit the Three-Dot menu in the top right, and select "Select radio band"
4) Select USA Band
5) Hit the Turn Off Radio button
6) Select GSM auto (PRL) under Preferred Network Type
7) Turn On Radio
The phone should show no data for a second, then 3G, then eventually an H for HSPA will be displayed.
You can also try GSM only or WCDMA preferred if GSM auto doesn't work.
Still trying to figure out how to get LTE to play nice with it.

There is a known LTE bug that causes this issue in 4.4. Check aracanexvi's thread in the Droid Ultra section. Basically we will need to leave LTE off of you want to make calls reliably.
Sent from my XT1080 using xda app-developers app
---------- Post added at 10:38 AM ---------- Previous post was at 10:36 AM ----------
Would be easier if I just shared the thread
http://forum.xda-developers.com/showthread.php?t=2591954
4.4 and Non-VZW carriers
Sent from my XT1080 using xda app-developers app

Which one are people having better luck with, at or T-Mobile?

can you put a T-Mobile ROM for it to work as well?

Using Verizon Moto X (locked Verizon retail) on ATT should be as good as using it on Tmobile, assuming I don't need LTE ?
Thanks.

Flash Sprint note 8 to work on Verizon

I have a sprint note 8 and ive tried to follow the guides to flash unlocked firmware and keep getting sha256 error. I put my Verizon SIM card in and it works but it is always roaming and Verizon said I don't have a phone active on my account. I don't know if there is a way to fix it and I'm super frustrated trying to flash unlocked firmware trying to fix it any help would be appreciated.

If the phone has a clean IMEI it will work on T-Mobile, Metro PCS, AT&T, Verizon Prepaid (PagePlus) or any other GSM carrier in the US and worldwide, Phone will work on Roaming State , Make sure you add your Carrier APN for the Data settings.
Sounds like you are stuck in roaming state nothing you can do about it.. I bought the unlocked model cause I figure it's best to bout be carrier locked

What do you mean by roaming state?
Surely roaming state is when user roams onto a different network other than their own. Example, T Mobile customer travels to Spain and roams onto Mobistar Spanish cell network using his or her existing T Mobile sim card regardless of what the device is.
Perhaps that's how it works between the two USA cdma carriers? - the way you mentioned it.
Sent from my SM-N950U using Tapatalk

Limeybastard said:
What do you mean by roaming state?
Surely roaming state is when user roams onto a different network other than their own. Example, T Mobile customer travels to Spain and roams onto Mobistar Spanish cell network using his or her existing T Mobile sim card regardless of what the device is.
Perhaps that's how it works between the two USA cdma carriers? - the way you mentioned it.
Sent from my SM-N950U using Tapatalk
Click to expand...
Click to collapse
So fp r short you are using sprints towers on Verizon's network is what I believe read below
roaming is a term used to describe the ability of phones to connect to the network of a different carrier, abroad or at home in order to offer users the same features they use while on their “home” network – making and receiving calls and text messages and surfing the web. Roaming is possible thanks to the international agreements carriers have with other carriers, in order to offer their wireless services in other regions of a country or of the world.

Mi 9 cant activate with LTE on AT&T network?

So I got a Chinese edition phone with band 2, 4, 5, 12, and 17 to fully support both TMobile and ATT network. The Global edition was missing band 17 for ATT so I didnt want to go that route. Been going back and forth with ATT a bit for the past few days since my device came in. The phone shows up and an "unknown device" on their network when we tried adding the IEMI. It will get UMTS (2g) and HSPA+ (3Gish/4G), but will not connect to any LTE or GSM. The phone supports GSM fine, so its strange that it wont do normal cellular connection over that, it will only do cellular over UMTS. The device wont detect as an LTE device and so the sim wont activate LTE on it.
Anyone else with ATT have this issue? And were you able to resolve it somehow?
Or those with TMobile in the US, are you able to activate the phone fine and get full coverage and LTE working?
I messed around with the connection settings in the *#*#4636#*#* menu. Only the "LTE/TD-SCDMA/UMTS" and "LTE/TD-SCDMA/WCDMA" will work properly at all. Both options give me UMTS for cellular, and HSPA+ for data. Of the 4 APNs that ATT uses, only the "ATT Phone" will work at all. The standard LTE APN "NXTGENPHONE" will leave the phone with no data or cellular service. This is related to the phone not being detected as an LTE device and the SIM not activating as such.

I simply put my AT&T sim in my China version and it worked straightaway. I didn't have to do anything else.

I am on Cricket, which leases service from AT&T, so I should know if it works once it comes Tuesday.

Just for perspective, I got a EU version of the Mi 9. Popped in a T-Mobile sim and it worked out of the box. Try the other sim slot. Could be your sim card if not.
Try these codes in Dialer. See if that helps anything.
VoLTE *#*#86583#*#*
VoWIFI *#*#869434#*#*

I was just making an ATT account so no previous activations or sims. So that could be the issue. I will try activating a sim with an old phone and then move the sim over. Or since it is the same hardware as a Galaxy S10, ill see if I can find a store that will activate a sim with a floor model S10 and then let me swap the sim into my Mi 9

Straight talk (ATT sim) lte without issue. no programming necessary , I have the global model though

jvs60 said:
I simply put my AT&T sim in my China version and it worked straightaway. I didn't have to do anything else.
Click to expand...
Click to collapse
airwebber said:
I am on Cricket, which leases service from AT&T, so I should know if it works once it comes Tuesday.
Click to expand...
Click to collapse
MixEvo said:
Straight talk (ATT sim) lte without issue. no programming necessary , I have the global model though
Click to expand...
Click to collapse
Where did you guys buy the China version from?

US mobile white SIM from starter kit (T-Mobile) works well with LTE on Chinese model of Mi 9. Black one (Verizon) technically works, registers in the network and enables data, but Verizon refuses the IMEI as non-certified brand of the phone. Trick with activation on the iphone first and switching to xiaomi did not work, service gets cut off, when trying to make a call, it keeps dropping. AT&T based: Cricket and Straight Talk work just fine too.
---------- Post added at 06:15 AM ---------- Previous post was at 06:14 AM ----------
StDevious said:
Where did you guys buy the China version from?
Click to expand...
Click to collapse
Aliexpress https://www.aliexpress.com/item/Ori...222.html?spm=a2g0s.9042311.0.0.58b14c4dxws9df
You'r welcome =)

StDevious said:
Where did you guys buy the China version from?
Click to expand...
Click to collapse
I bought my Transparent Edition from Tradingshenzhen.com

Neolo said:
US mobile white SIM from starter kit (T-Mobile) works well with LTE on Chinese model of Mi 9. Black one (Verizon) technically works, registers in the network and enables data, but Verizon refuses the IMEI as non-certified brand of the phone. Trick with activation on the iphone first and switching to xiaomi did not work, service gets cut off, when trying to make a call, it keeps dropping. AT&T based: Cricket and Straight Talk work just fine too.
Click to expand...
Click to collapse
Thanks for the info.
I was wondering about Verizon, since it support some CDMA bands and support 2 out of 3 of the LTE bands they use (doesnt support B13). Unfortunately I never tried it myself since half the coverage near me uses the band this phone doesnt support on Verizon.
I went and got my ATT account updated to an old Nexus 6 IMEI number and it got LTE on the N6. I then took the sim and put it in my Mi 9 and now the Mi 9 has LTE. So for anyone just getting this phone, you must have an IMEI on your account that is recognized as an LTE phone. If you try to add the IMEI of the Mi9 it is not recognized by ATT and wont provision LTE.

IMEI spoofing does not work with Verizon, as they simply ban the device. They call it “non certified”. Bands are seem ok.

StDevious said:
Where did you guys buy the China version from?
Click to expand...
Click to collapse
I been purchasing from liaow. Never ran across a issue with them

I've been having the same issue, with a recently-bought (last week arrived) Mi 9 Global on AT&T postpaid. LTE showed up and worked fine day one, now network speeds are dropped down to 3.5G speeds. Anyone else have success with getting LTE on a fresh SIM?

EniGmA1987 said:
So I got a Chinese edition phone with band 2, 4, 5, 12, and 17 to fully support both TMobile and ATT network. The Global edition was missing band 17 for ATT so I didnt want to go that route. Been going back and forth with ATT a bit for the past few days since my device came in. The phone shows up and an "unknown device" on their network when we tried adding the IEMI. It will get UMTS (2g) and HSPA+ (3Gish/4G), but will not connect to any LTE or GSM. The phone supports GSM fine, so its strange that it wont do normal cellular connection over that, it will only do cellular over UMTS. The device wont detect as an LTE device and so the sim wont activate LTE on it.
Anyone else with ATT have this issue? And were you able to resolve it somehow?
Or those with TMobile in the US, are you able to activate the phone fine and get full coverage and LTE working?
I messed around with the connection settings in the *#*#4636#*#* menu. Only the "LTE/TD-SCDMA/UMTS" and "LTE/TD-SCDMA/WCDMA" will work properly at all. Both options give me UMTS for cellular, and HSPA+ for data. Of the 4 APNs that ATT uses, only the "ATT Phone" will work at all. The standard LTE APN "NXTGENPHONE" will leave the phone with no data or cellular service. This is related to the phone not being detected as an LTE device and the SIM not activating as such.
Click to expand...
Click to collapse
I got the Chinese version and I'm in the US. And I I have the straight talk T-Mobile sim and everything works like it is suppose to expect my internet. It says its 4g but it is very very slow. Any ideas?