Database Develop

Force WCDMA Only

Hi all,
Would like to check if anyone knows how could i set "WCDMA Only" (3G Only) on Galaxy S?
I can only Force 2G only via the settings menu, but not 3G only.
Managed to access the "Phone Info" menu via *#*#4636#*#*, selected "WCDMA Only" from the dropdown box.
However, nothing seemed to be set nor i see any button to save the choice?
Anyone happen to know how can i have it set? Or i could manually set it by applying some settings somewhere?
Thanks alot!

you cant force 3g... you would get no signal if you didnt have a 3g connection

boinger66 said:
you cant force 3g... you would get no signal if you didnt have a 3g connection
Click to expand...
Click to collapse
I know that. However, such settings are available in Nexus One.

i2umi said:
I know that. However, such settings are available in Nexus One.
Click to expand...
Click to collapse
It is also available on the HTC Desire :
WCDMA only
GSM/WCDMA auto
GSM only

*#*#197328640#*#* > debug screen > phone control > network control > band selection
You need to do this after each reboot though as it does not stick.

Is there a way to shortcut this with anycut?

-Double Post-
Sent from my GT-I9000 using XDA App (Which seems less than stable...)

The app Network simplifies the procedure quite a bit. Haven't actually gone into a low signal spot yet to see if it fully works as intended though.
Sent from my GT-I9000 using XDA App

thank you very much..i have been searching this high and low...you save my day..

Thank you so much! This helped me diagnose the SGS and see if I have 1900 3G in my area (1 bar). here's a tip that I used for quick access to the debug screen just as a trial and it actually worked
Enter ONLY *#*#197328640#*# then hit add to contacts (notice there is no * at the end).
Give it a name (Samsung Debug Screen) and tap to edit the number and enter the final * at the end.
Save and exit. Now whenever u want to enter debug mode to change the network or other stuff just type *#*# and it should appear. Tap on the contact and voila!

clubtech said:
*#*#197328640#*#* > debug screen > phone control > network control > band selection
You need to do this after each reboot though as it does not stick.
Click to expand...
Click to collapse
Awesome, thanks for this! Lots of fun debug info in there.
boinger66 said:
you cant force 3g... you would get no signal if you didnt have a 3g connection
Click to expand...
Click to collapse
My operator doesn't have a 2G network... all they have is 3G. There's no point in my phone looking for anything other than a 3G network.

Solution added to FAQ

sorry to ask if this is already answered but how exactly to i get to CONFIRM my wcdma only selection? i check it and nothing happens, data connection stays on "G" symbol. I know for sure that at the place where i tested i get NO 3g signal. which means probably that i should be losing all signal after choosing wcdma only. that does not happen. also if i close the phone info app and reopen it, choice gets back to default (3g/gprs).
any help appreciated... I really need this.

forcing to only 3g is a bad move, i tested it on my n1 and i kept dropping calls once 3g lost signal.

raspdeep said:
forcing to only 3g is a bad move, i tested it on my n1 and i kept dropping calls once 3g lost signal.
Click to expand...
Click to collapse
I know but i need it for the internet.. and i need it badly.. please help anyone as soon as possible. thank you guys

Its available in the new firmware I9000XWJM1
Hey, its there in I9000XWJM1 and tested working great as expected! However its a beta so you may see other issues. Not sure if its there in latest stable.

Just to confirm, i upgraded my firmware to XWJM5 today, and i noticed that in settings > wireless and network > mobile networks, there's a new menu 'network mode' in which there's 3 options - auto / gsm only / wcdma only. Nice touch!
In answer to the cynics, there are times when browsing, when the phone is borderline whether to give you 2g or 3g, it does come in handy, and it's safer too, as if i have to browse on 2g it makes me want to smash the phone up!!

spark001uk said:
Just to confirm, i upgraded my firmware to XWJM5 today, and i noticed that in settings > wireless and network > mobile networks, there's a new menu 'network mode' in which there's 3 options - auto / gsm only / wcdma only. Nice touch!
In answer to the cynics, there are times when browsing, when the phone is borderline whether to give you 2g or 3g, it does come in handy, and it's safer too, as if i have to browse on 2g it makes me want to smash the phone up!!
Click to expand...
Click to collapse
LOL "safer"

@OP Although 'WCDMA only' mode may not be a good idea and hence not recommended but just to confirm
my current Build i9000XXJPH have following three modes
GSM/WCDMA (auto mode)
GSM only
WCDMA only

JM8 build also have this mode. I noticed that when I flash the i9000M (bell version) previously it didn't have these modes.

Switch from 2G to 3G

Recently bought a Samsung I897 Captivate. Its a unlocked phone and I'm using it in Argentina with Movistar. My previous phone was a Motorola Milestone, and it sometimes changed the connection from 3G / HSDPA to 2G (EDGE), in 3G areas. The solution was to go to APN settings, enable "2G only", then disabling it, and the phone instantly switched to 3G again.
However, the Captivate doesn't have such option. Setting the phone to Flight Mode its useless, it will keep connecting in 2G.
Only solution I found at the moment was to go to Network Mode (*#0011#) then navigate to Network Control => Band Selection, selecting WCDMA only, and then enabling Automatic again.
That seems to reset the connection.
I searched in the market for free and paid apps to help me fix this issue, but I found nothing, only the Toggle 2G app, but it only works with Cyanogen Mod.
I have some questions:
If I set the connection to WCDMA only, then I'll have no signal at all in 2G areas, right?.
Does anyone know a quicker way to do this?. I tried to make a shortcut to ServiceMode with dg Quickcut but when I try to open it it crashed the phone.
Thanks in advance.
Whipon.

Whipon said:
Recently bought a Samsung I897 Captivate. Its a unlocked phone and I'm using it in Argentina with Movistar. My previous phone was a Motorola Milestone, and it sometimes changed the connection from 3G / HSDPA to 2G (EDGE), in 3G areas. The solution was to go to APN settings, enable "2G only", then disabling it, and the phone instantly switched to 3G again.
However, the Captivate doesn't have such option. Setting the phone to Flight Mode its useless, it will keep connecting in 2G.
Only solution I found at the moment was to go to Network Mode (*#0011#) then navigate to Network Control => Band Selection, selecting WCDMA only, and then enabling Automatic again.
That seems to reset the connection.
I searched in the market for free and paid apps to help me fix this issue, but I found nothing, only the Toggle 2G app, but it only works with Cyanogen Mod.
I have some questions:
If I set the connection to WCDMA only, then I'll have no signal at all in 2G areas, right?.
Does anyone know a quicker way to do this?. I tried to make a shortcut to ServiceMode with dg Quickcut but when I try to open it it crashed the phone.
Thanks in advance.
Whipon.
Click to expand...
Click to collapse
as of right now, there is no "fix" for this. the best you COULD do is to flash Eugene's VibrantHybrid ROM where the "use 2g networks only" option does exist, but you'll lose GPS (for now)

Kaik541 said:
as of right now, there is no "fix" for this. the best you COULD do is to flash Eugene's VibrantHybrid ROM where the "use 2g networks only" option does exist, but you'll lose GPS (for now)
Click to expand...
Click to collapse
Thanks for the quick reply Kaik541.
Does the signal strength improve with that rom?.
Currently I'm using I897UCJH7 from samfirmware.

Whipon said:
Thanks for the quick reply Kaik541.
Does the signal strength improve with that rom?.
Currently I'm using I897UCJH7 from samfirmware.
Click to expand...
Click to collapse
you should revert back to JH3 if you're going to use Hybrid (I don't believe JH7 is compatible yet, there are some issues that cropped up with SRE, so it would be safer to do JH3, or even better JF6). I've seen slightly better reception and MUCH better battery life running Hybrid

Kaik541 said:
you should revert back to JH3 if you're going to use Hybrid (I don't believe JH7 is compatible yet, there are some issues that cropped up with SRE, so it would be safer to do JH3, or even better JF6). I've seen slightly better reception and MUCH better battery life running Hybrid
Click to expand...
Click to collapse
It seems it will be updated soon.
Maybe I'll give it a try.
Do you know if it removes the 850 band?.
I need it, because my carrier uses it for WCDMA.

Try this:
1. In the Market, download Any Cut. (This is a free app) 2. open Any Cut and choose New Shortcut 3. select Activity 4. Scroll down the list until you get to Phone Info 5. Select OK. (this will place the short cut on your homescreen) 6. Open the shortcut and scroll down until you see "Set Preferred Network Type" 7. Choose GSM only and you are set. This forces the phone to EGDE
I used this to force edge. Use google to download AnyCut, it doesn't exist on the market for the unknown reason
Sent from my SAMSUNG-SGH-I897 using XDA App

I just discovered Juice Defender. One of its features is to set phone to 2G automatically (seems very configurable). I haven't really had a chance to test it, but thought I'd mention it to you anyway

DarkVasyaK said:
Try this:
1. In the Market, download Any Cut. (This is a free app) 2. open Any Cut and choose New Shortcut 3. select Activity 4. Scroll down the list until you get to Phone Info 5. Select OK. (this will place the short cut on your homescreen) 6. Open the shortcut and scroll down until you see "Set Preferred Network Type" 7. Choose GSM only and you are set. This forces the phone to EGDE
I used this to force edge. Use google to download AnyCut, it doesn't exist on the market for the unknown reason
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Thanks a lot. I use dg Quickcut for that.
But, I don't need to force EDGE, I need a way to force 3G .
The phone usually switchs to EDGE in 3G areas, and I need to change it back to 3G.
I've used your suggestion to make such shortcut, changed it to WCDMA only, clicked the Disable Radio button twice (because it didn't changed to 3G), and when it switched back to 3G, I changed back the network to GSM / CDMA auto.
What about WCDMA preferred?. Will it try to allways connect to 3G?.

can yall not just dial * # * # 4636 #*#* scroll to the bottom and chnage it there, just so happens i posted a how to earlier in the general section, works on stock ROMS afaik.
also GPS still works

Whipon said:
Thanks a lot. I use dg Quickcut for that.
But, I don't need to force EDGE, I need a way to force 3G .
The phone usually switchs to EDGE in 3G areas, and I need to change it back to 3G.
I've used your suggestion to make such shortcut, changed it to WCDMA only, clicked the Disable Radio button twice (because it didn't changed to 3G), and when it switched back to 3G, I changed back the network to GSM / CDMA auto.
What about WCDMA preferred?. Will it try to allways connect to 3G?.
Click to expand...
Click to collapse
read my previous post.
it has a WCDMA preferred WDMA only (only uses 3g) and a bunch of others. read my post in general for a more detailed explanation.

Thanks a lot
xatrekak said:
can yall not just dial * # * # 4636 #*#* scroll to the bottom and chnage it there, just so happens i posted a how to earlier in the general section, works on stock ROMS afaik.
also GPS still works
Click to expand...
Click to collapse
Thanks, but Mesasone pointed me to a great app in the market.
Its called Samservmode. It opens service mode without entering any codes.
Anyways, thanks for your help .

Does 2G work on Telus with Milestone?

I'm currently using CM 6.1.2 on my Milestone.
If I switch to 2G mode in the mobile network settings, I have no connection.
If I use the Toggle 2G app, it doesn't seem to really do anything. If I set 2G to use one of the options that don't disconnect me (WCDMA, CDMA or GSM 2g/3g) it still shows 3G in the status bar so I'm not sure what the point is in using the Toggle 2G app.

Wondering the same thing myself...
Does anyone knows the answer?

zeppelinrox said:
I'm currently using CM 6.1.2 on my Milestone.
If I switch to 2G mode in the mobile network settings, I have no connection.
If I use the Toggle 2G app, it doesn't seem to really do anything. If I set 2G to use one of the options that don't disconnect me (WCDMA, CDMA or GSM 2g/3g) it still shows 3G in the status bar so I'm not sure what the point is in using the Toggle 2G app.
Click to expand...
Click to collapse
I am not certain about this (i use rogers), but i believe that telus has no 2G (edge) network. They built a 3G only network just in time for the olympics to replace their cdma network:
So the toggler probably cant find a valid connection and retries 3G.
Manual mode cant find a network at all.
On rogers, i can fallback to 2g. This is normal according to what i think i know.
Sent from my Milestone using Tapatalk

thanks for the info.
That's what I thought so have given up on the idea of getting 2g to work
I guess when it comes to 3g and saving battery life, juice defender will have to do as it can turn off data when the screen is off but still have the phone working.

Well, I think I made some progress with this.
On my phone, I was also loosing the connection when switching from 3G to 2G but it's working now. I can get calls, it's only the data aver 2G that doesn't work now.
I have the Cronos rom on my phone, I can tell you what I did if you're interested.

Yes please do.
If it works on cm6 then at least I can also save juice by not using juice defender... oh the irony... lol
edit: hey look at all them Canadian flags, eh?!
Sent from my Milestone using Tapatalk

Took me a lot of time to find the right switches combination.
Anyway, I have Toggle 2G auto managing the 2G/3G and for the bottom 2 options:
2G network: WCDMA preferred (3G/2G)
3G network: GSM auto (PRL)(2G/3G)
If I check under Setting/About/Phone/Status, I see written mobile network type UMTS.

Hmm... I had those 2 settings reversed when using toggly2g
I will try that.
Right now, my mobile network type shows up as HSPA.
Your post prompted me to find the difference and came up with these 2 useful pages just before my head exploded.
Awesome thread: http://www.howardforums.com/showthread.php/1600012-HSPA-vs.-UMTS
Handy chart at the bottom of http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System

s0ulreaver said:
Well, I think I made some progress with this.
On my phone, I was also loosing the connection when switching from 3G to 2G but it's working now. I can get calls, it's only the data aver 2G that doesn't work now.
I have the Cronos rom on my phone, I can tell you what I did if you're interested.
Click to expand...
Click to collapse
Is this not the same then as just shutting off data?

Caz666 said:
Is this not the same then as just shutting off data?
Click to expand...
Click to collapse
Not sure but I don't think so. You can turn off the data but have the phone connected to the 3G network, right?
I think you could get data over 2G but it's just very slow, right?
With Telus I don't think they allow data over 2G.
zeppelinrox, I wonder why yours shows like this, what do you have active under those settings?
What ROMs are you guys using?

zeppelinrox said:
Hmm... I had those 2 settings reversed when using toggly2g
I will try that.
Right now, my mobile network type shows up as HSPA.
Your post prompted me to find the difference and came up with these 2 useful pages just before my head exploded.
Awesome thread: http://www.howardforums.com/showthread.php/1600012-HSPA-vs.-UMTS
Handy chart at the bottom of http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System
Click to expand...
Click to collapse
When I'm on 2G it shows as UMTS
With 3G (mobile data enabled) I see it alternating from 3G/UMTS to H/HSPA.

I'm on CM6.
My phone always shows HSPA except if I set it to use 2G then it shows GPRS - which is when I have no data and no phone signal.
I did use the Telus baseband file in AOR though... I wonder how it will behave if I use the Canada baseband....
Also, here's a neat trick....
dial *#*#4636#*#*
A Testing App will show up....
Select Phone Information and then goto the bottom.
You can set your preferred Network type.
Ok so that listbox shows all the different options.
The only options that will save are:
GSM only (2g - I get nothing - shows as GPRS)
WCDMA only (3g - shows as HSPA)
GSM auto (PRL) - (3g - shows as HSPA as well)
All the other options either are not selectable or just revert back to GSM auto (as is the case with WCDMA preferred)
I just did a few speed tests and I seem to get faster speeds with GSM auto than I do with WCDMA only
Gonna try that Canada baseband now....
Edit: Same thing. Except the speed test is slower for both WCDMA and GSM autio so best off using the Telus baseband.

The dial trick doesn't work. I dial the sequence as a phone number, right?
It disappears then nothing changes.

ah.. yeah sometimes it takes 2 or 3 tries...
do you use adw launcher?
If so, you can actually create a shortcut for it... I figured it out today.
1 Press and hold on homescreen and select Custom shortcut
2 Press "Pick your activity"
3 Select the second item on the list ie. Activities (with the ADW icon)
4 Wait for all stuff to load, scroll down to Settings, and press the arrow next to it to see the long list of activites that Settings.apk can do.
5 Scroll down near the end of the list, you will see Testing(.TestingSettings)
6. Select that and press OK on the next window.
I also made one for Battery History, which is actually part of the Testing app but is usually only accessible through Spare Parts.

I still can't get the trick to work... doesn't do anything on my phone
Right now I'm on the 2501 rom (latest 2.2.1 from Motorola) and I can say it's the best I've tested so far!
Outstanding battery life!

I found another way to run Testing App.
With Google gesture search you can set it to launch Settings actions
Let it scan and then write "testing" on the screen
Edit: oh crap I mistyped the code.
Its *#*#4636#*#*
I had 4536 before so I fixed it
Sent from my Milestone using Tapatalk

zeppelinrox said:
I'm currently using CM 6.1.2 on my Milestone.
If I switch to 2G mode in the mobile network settings, I have no connection.
If I use the Toggle 2G app, it doesn't seem to really do anything. If I set 2G to use one of the options that don't disconnect me (WCDMA, CDMA or GSM 2g/3g) it still shows 3G in the status bar so I'm not sure what the point is in using the Toggle 2G app.
Click to expand...
Click to collapse
Well, after doing some more tests and trying different apps (2G/3G switchers) I can say those apps work only if your cell phone company has both 2G/3G network.
In Montreal, only Rogers has both.
Easy to test (btw: I'm using the FroyoMOD rom): go in "Settings" -> "Wireless & Networks" -> "Mobile Network Settings" and check "Use only 2G networks".
See if your cell phone company is listed when you do a search under "Network Operators". If it's not, don't bother using a 2G/3G switcher.
When doing this, in Montreal I see only Rogers listed. If I uncheck "Use only 2G networks" I see all 3 of them: Bell, Telus and Rogers.
Hope this helps!

[Q] HSDPA HSUPA how do you know that it is active?

I was trying Cyanogen 7 on SGS and int the install instruction they said to activate HSDPA/HSUPA b/c if not you wouldn't be able to activate them after (now I understant the codes do not work on CM7). Anyhow the guide said to make sur to see in the menu (*#301279#)
HSPDA:1 HSUPA:1 (in the video and clearly there was a 1 on that line)
I tryied but activate but I always get 0 instead of 1.
How come it's not showing on my phone?
It's a Samsung Galaxy S (I9000 not I9000M) operating on Fido/Rogers Canada with a Candian modem (KC1).
thanks.
PS: when using data connection when in 3g coverage I see sometimes 3G sometimes H on the status bar

i have the same issue......
any thoughts wld be helpfull

To see your mobile network type goto settings >> About phone >> status >> Mobile Network Type. It'll show your based on your current networ.

I have the same issue. The service mode won't let me change the HSDPA to on. I have never turned it off myself If I upgrade to Cyanogen I always stay in 3g... No idea on how to change it...

Same here.
http://forum.xda-developers.com/showpost.php?p=13750663&postcount=1660
Any ideas?

You can see HSPDA:1 HSUPA:1 only when your telephone is in HSPDA or HSUPA network. If it's in EDGE you'll see HSPDA:0 HSUPA:0.
I had the same problem and used my wife's sim (another operator) for testing. So with my sim I had HSPDA:0 HSUPA:0 (E letter in task bar) and with her HSPDA:1 HSUPA:0 (H letter in task bar).

[Q] Problem with 3G data connection

Hi
With my friend purchased 2 Nexus 6. (I bought it from Netherland and my friend in U.S) In our city we have 3G signal. Most of the time I cant connect to 3G connection and only can use 2G (EDGE) but my friend at same time and same place and same operator connect to 3G!
we have the same build number on our phones.
today I try to solve my issue and got some information about this problem that I’ll explain it. Is there anyone can help me to solve it?
In setting >> More >> Celluar networks >> Prefereed network type when i select LTE a green circle added that show now LTE is selected (picture 1) but when I close this menu and again open it , LTE is not selected (picture 2). I tried more than 10 times in different places, even flash latest nexus 6 factory image and test with my friend sim.
After that I tried with *#*#4636#*#* secret code and went to Phone information saw my preferred network type is : LTE/GSM auto (PRL) , and my friend’s phone is LTE/GSM/CDMA auto (PRL).
I changed my settings to LTE/GSM/CDMA. again when i close this page and reopen it it automatically changed to LTE/GSM. (picture 3)
All of our settings are the same. but just when we dial *#*#4636#*#* and go to phone information >> select top menu >> select radio band we have diffrent datas.
My phone just have USA band but my friend has 3 more option (picture 4)!
I hope someone can help me to solve this terrible problem.
P.S. becuase of poor 3G signal in some areas I can't choice WMCDA Only option
thanks

ramon2045 said:
Hi
With my friend purchased 2 Nexus 6. (I bought it from Netherland and my friend in U.S) In our city we have 3G signal. Most of the time I cant connect to 3G connection and only can use 2G (EDGE) but my friend at same time and same place and same operator connect to 3G!
we have the same build number on our phones.
today I try to solve my issue and got some information about this problem that I’ll explain it. Is there anyone can help me to solve it?
In setting >> More >> Celluar networks >> Prefereed network type when i select LTE a green circle added that show now LTE is selected (picture 1) but when I close this menu and again open it , LTE is not selected (picture 2). I tried more than 10 times in different places, even flash latest nexus 6 factory image and test with my friend sim.
After that I tried with *#*#4636#*#* secret code and went to Phone information saw my preferred network type is : LTE/GSM auto (PRL) , and my friend’s phone is LTE/GSM/CDMA auto (PRL).
I changed my settings to LTE/GSM/CDMA. again when i close this page and reopen it it automatically changed to LTE/GSM. (picture 3)
All of our settings are the same. but just when we dial *#*#4636#*#* and go to phone information >> select top menu >> select radio band we have diffrent datas.
My phone just have USA band but my friend has 3 more option (picture 4)!
I hope someone can help me to solve this terrible problem.
P.S. becuase of poor 3G signal in some areas I can't choice WMCDA Only option
thanks
Click to expand...
Click to collapse
first off you and your friend have different nexus 6. sounds like your friend has a US version and you have the international version. the difference between the two is the radio/frequencies included.

simms22 said:
first off you and your friend have different nexus 6. sounds like your friend has a US version and you have the international version. the difference between the two is the radio/frequencies included.
Click to expand...
Click to collapse
ok. but why internatinal version has problem with this type of connection?

ramon2045 said:
ok. but why internatinal version has problem with this type of connection?
Click to expand...
Click to collapse
honestly, im clueless. what frequencies does your provider use? your friends phone coyld possibly have a better connection to whatever frequency that your provider provides.

simms22 said:
honestly, im clueless. what frequencies does your provider use? your friends phone coyld possibly have a better connection to whatever frequency that your provider provides.
Click to expand...
Click to collapse
Just not have better connection. they have different radio band .