Develop Bugs

T-mobile SGH-T849 access to voice +2G/3G/HSDA + video calls for non US users

T-mobile SGH-T849 access to voice +2G/3G/HSDA + video calls for non US users!
Tested with Roto JME Pre-Rooted Firmware ! http://forum.xda-developers.com/showthread.php?t=894763
Based on Roto T-Mobile Modem Switcher! http://forum.xda-developers.com/showthread.php?t=871021
!carefully follow ROTO's modemswitch installation instructions!
1. download the T959uvjl5 modem http://rapidshare.com/#!download|963...odem.tar|12584
2. unzip into your /sdcard/modemswitch/
3. rename modem.bin in to ROTO-3G_modem.bin
4. switch modems from GScript Lite! Enjoy.
A LOT OF THANKS TO ROTOHAMMER! MY T-MOBILE GALAXY TAB IS FULLY WORKING DEVICE NOW!
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Is it something new or just instructions for installing roto`s modem switcher?
Can u make calls on AWS?
In canada voice calls are only possible as canadian aws carriers do not have gsm network.

the link to the modem doesnt work. i doubt this will give US tmobile folks 3G and phone tho.

I have read so many threads and I need answers.
1. How do US T-mobile users get 3g and phone?
2. Will the modem switcher do this?
3. What is the most current rom to install?
Sent from my sofa using XDA App

The title is very misleading. It's wether 2g and voice or 3g only made available using the modem switcher.
It will never be like the AT&T that can use 3g and voice. Boo!

mywingtophone said:
The title is very misleading. It's wether 2g and voice or 3g only made available using the modem switcher.
It will never be like the AT&T that can use 3g and voice. Boo!
Click to expand...
Click to collapse
He used modem from a cell phone that can do both voice and 3G. The modem switcher is just used to flash the modem but is completely unnecessary, he could have used redbend or heimdall just to flash the modem and be done with it. This is a major win for TMO users.

Download link is not working

Technomancer said:
This is a major win for TMO users.
Click to expand...
Click to collapse
Can some clarify what has been done here?
The title of the thread claims "for non us users" ... so who/what network is this for?

Here's another link for the JL5 modem.
http://www.multiupload.com/GQFV8ZC6T1

TurckBoatTruck said:
Can some clarify what has been done here?
The title of the thread claims "for non us users" ... so who/what network is this for?
Click to expand...
Click to collapse
It is for European 900/1800/1900/2100 UMTS only! with T-mobile SGH-T849

Technomancer said:
He used modem from a cell phone that can do both voice and 3G. The modem switcher is just used to flash the modem but is completely unnecessary, he could have used redbend or heimdall just to flash the modem and be done with it. This is a major win for TMO users.
Click to expand...
Click to collapse
Yes you are right! but I wished to make modemswitch process more safe for users who do not like use Odin or heimdall flashing several times

irkkso said:
It is for European 900/1800/1900/2100 UMTS only! with T-mobile SGH-T849
Click to expand...
Click to collapse
No 1700 so that means no 3G and voice on US tmobile tab

It might work for tmobile /wind users as well if somebody can replace RIL libraries / modules with vibrant stuff.

so this modem can be flashed with odin, and will it work with any rom or the euro rom only ??

wawoox said:
so this modem can be flashed with odin, and will it work with any rom or the euro rom only ??
Click to expand...
Click to collapse
only for euro rom due phone dialer ability. may be flashed any preferred way.

irkkso said:
only for euro rom due phone dialer ability. may be flashed any preferred way.
Click to expand...
Click to collapse
thanks irkkso ...so it work with any rom that support a dialer ?

wawoox said:
thanks irkkso ...so it work with any rom that support a dialer ?
Click to expand...
Click to collapse
exact!! 10chars

Big thanks to author of thread. It's helped me a lot! A thought that problem im my tablets receiver ^^
But now appeared another problem – leak of battery. During night, in sleep mode it’s discharges on 30% (around).
Can u propose another modem?

Thanks @irkkso for this post and @android-rules for your mirror link. I using T-mobile Tab version with [ROM] Overcome 1.6.3.
Country: Vietnam.
Mobile Carrier: Viettel Mobile.
I was unable to use 3G with phone call but now I have both on my Tab. Thanks so much.
My result: (I don't have a screen shot to show you guys) "H" sign (HSDPA right?) on notification bar and, of course, phone function works!
Thanks again.

it works just as I've said in other previous posts cause it's a galaxys tmobile modem but it got the max step volume bug on JMx firmwares.the max volume is two steps back than what it should be after it decreases...this is issue is not present on if you use it on jk5 firmwares.same things happen if you use jk5 modem on jmx firmwares-...but I'm trying to fix it asap

[Q] HTC Desire Z (T-Mobile g2) Radio Unlock

Hi all,
I have just Flash my HTC desire Z with Cyanogen ROM.
I want to know what i need to do to make it work "Unlock" on my Telus SIM card.
It was previously with T-Mobile. I was thinking that flashing it with a new rom was unlocking it.
Do i need to flash a new radio ?
Tanks a lot for my newby question
Eric

dialfonzo said:
Hi all,
I have just Flash my HTC desire Z with Cyanogen ROM.
I want to know what i need to do to make it work "Unlock" on my Telus SIM card.
It was previously with T-Mobile. I was thinking that flashing it with a new rom was unlocking it.
Do i need to flash a new radio ?
Tanks a lot for my newby question
Eric
Click to expand...
Click to collapse
You need to get S-Off by using gfree. What method did you use too root?

I have follow the Cyanogen procedure.
http://wiki.cyanogenmod.com/index.php?title=TMobile_G2:_Rooting
And when booting with "power" and "Vol up" the boot tell me that i am s-off

dialfonzo said:
I have follow the Cyanogen procedure.
http://wiki.cyanogenmod.com/index.php?title=TMobile_G2:_Rooting
And when booting with "power" and "Vol up" the boot tell me that i am s-off
Click to expand...
Click to collapse
When you followed the procedure there and used gfree -f it also removed the sim.lock.
So you are good to use any SIM you like.
have fun - Guhl

I am doing that for my friend.
The t-Mobile G2 is Flashed, and work. But if i put my "Telus" sim card (from my htc desire hd) it's not locked. But i don't have a network.
He will use it on "Rogers" network but i don't have his card yet. (since he have a iphone4 and we are waiting for an adaptor from micro sim)
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I'm with Telus at the moment with a Bell DZ.
Unfortunately, I'll have to say that T-Mobile devices will not work with Telus as the radio bands are incompatible. Per GSMArena, the T-Mobile G2 supports GSM 850 / 900 / 1800 / 1900 and HSDPA 1700 / 2100. Telus does not operate a GSM network, albeit they do have an HSPA network running on 850/1900.
Your options are to:
1) trade your G2 for a Bell DZ
2) change carriers and go with Wind or Mobilicity (which do operate HSPA on 1700/2100)

theSpam said:
I'm with Telus at the moment with a Bell DZ.
Unfortunately, I'll have to say that T-Mobile devices will not work with Telus as the radio bands are incompatible. Per GSMArena, the T-Mobile G2 supports GSM 850 / 900 / 1800 / 1900 and HSDPA 1700 / 2100. Telus does not operate a GSM network, albeit they do have an HSPA network running on 850/1900.
Your options are to:
1) trade your G2 for a Bell DZ
2) change carriers and go with Wind or Mobilicity (which do operate HSPA on 1700/2100)
Click to expand...
Click to collapse
Tanks for the info
i will wait until i have his Rogers card
He will use it on "Rogers" network but i don't have his card yet. (since he have a iphone4 and we are waiting for an adaptor from micro sim)
Click to expand...
Click to collapse

dialfonzo said:
Tanks for the info
i will wait until i have his Rogers card
Click to expand...
Click to collapse
That sounds good. Rogers does have a GSM network (explains why the G2 can see their network). However, your data speeds will be limited to 2G.

[Q] [Stock rooted 4.1.2] I can't set my phone on 4G (LTE)

Hi XDA members !
I need your help about an issue I encountered on my Optimus G E975.
I'm French, my carrier is Free and I recently activated the 4G (LTE) option proposed in my plan, no problem.
I then wanted to enable the 4G network mode in my stock ROM, here comes the problem !
The LG's ROM only let me choose between 2G, 2G/3G or 3G networks. My phone is compatible, my APN are ok, Free's settings are ok too... So I decided to modify the build.prop file to force the 4G choice. I edited those lines :
- ro.telephony.default_network (changed value from 9 to 10, referring to a Google Code thread)
- telephony.lteOnCdmaDevice=1 into telephony.lteOnGsmDevice=1
I can now choose 2G/3G/4G setting and it seems to be working, but after each reboot, it doesn't stay checked and goes back to "2G/3G".
Can you help me please ?

xandersx said:
Hi XDA members !
I need your help about an issue I encountered on my Optimus G E975.
I'm French, my carrier is Free and I recently activated the 4G (LTE) option proposed in my plan, no problem.
I then wanted to enable the 4G network mode in my stock ROM, here comes the problem !
The LG's ROM only let me choose between 2G, 2G/3G or 3G networks. My phone is compatible, my APN are ok, Free's settings are ok too... So I decided to modify the build.prop file to force the 4G choice. I edited those lines :
- ro.telephony.default_network (changed value from 9 to 10, referring to a Google Code thread)
- telephony.lteOnCdmaDevice=1 into telephony.lteOnGsmDevice=1
I can now choose 2G/3G/4G setting and it seems to be working, but after each reboot, it doesn't stay checked and goes back to "2G/3G".
Can you help me please ?
Click to expand...
Click to collapse
Well, in any case, this is not a big problem.. You can also enter the secret code which i dont remember now, and force LTE, without any build.prop line. The problem is i dont remember the secret code menu.
EDIT: *#*#4636#*#*. Tap the first option, and scroll down. You will see a list. Tap and select LTE or 4G. Reboot and try if it works.

nch26 said:
Well, in any case, this is not a big problem.. You can also enter the secret code which i dont remember now, and force LTE, without any build.prop line. The problem is i dont remember the secret code menu.
EDIT: *#*#4636#*#*. Tap the first option, and scroll down. You will see a list. Tap and select LTE or 4G. Reboot and try if it works.
Click to expand...
Click to collapse
I just tried your idea. After *#*#4636#*#*, selected the first option ("Phone informations"), that displays the page with my phone infos but it's not accessible because of a pop-in saying "The application does not work on this device."
I can't do anything...

xandersx said:
I just tried your idea. After *#*#4636#*#*, selected the first option ("Phone informations"), that displays the page with my phone infos but it's not accessible because of a pop-in saying "The application does not work on this device."
I can't do anything...
Click to expand...
Click to collapse
Its weird since your phone is same like me...

nch26 said:
Its weird since your phone is same like me...
Click to expand...
Click to collapse
I tried flashing the .KDZ file compatible with my phone, no more success...
I'll keep me searching for a solution, it's frustrating to have a 4G-ready phone without 4G.

xandersx said:
I tried flashing the .KDZ file compatible with my phone, no more success...
I'll keep me searching for a solution, it's frustrating to have a 4G-ready phone without 4G.
Click to expand...
Click to collapse
Sorry for no solution !

nch26 said:
Sorry for no solution !
Click to expand...
Click to collapse
No problem, thanks for your try

I have the same problem. The 4G option just wont stick!
I'm on stock 4.1.2 and have not changed anything - had the 4G option from the get go. I also can't access the "secret menu" when typing in *#*#4636#*#* - I'm getting the same error.
Been looking for a solution for days, but nothing. Talked to LG - they suggested to reset the APN and then do a factory restore of the phone if that did not work.
Anybody found a solution?

nch26 said:
Well, in any case, this is not a big problem.. You can also enter the secret code which i dont remember now, and force LTE, without any build.prop line. The problem is i dont remember the secret code menu.
EDIT: *#*#4636#*#*. Tap the first option, and scroll down. You will see a list. Tap and select LTE or 4G. Reboot and try if it works.
Click to expand...
Click to collapse
bullcrap why is not working ?
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GalaxySIIII said:
bullcrap why is not working ?
Click to expand...
Click to collapse
Dont support on your optimus g variant.

nch26 said:
Dont support on your optimus g variant.
Click to expand...
Click to collapse
there must be different code then

Hi guys!
It's been a while since my last message here.
Just back to say my problem was solved by a little OTA update which probably brings valid LTE/4G configuration for my carrier (Free).
Today, I'm facing the same problem but on the GEE 3 ROM freshly flashed. Things are progressing but some problems stay the same x).
I'll contact devs about those problems.

How to use dual SIM on H930DS with H930v20d and no 2G network.

Hi all, I flashed the update from https://forum.xda-developers.com/lg-v30/development/h930-lg-v30-european-market-h930-t3779076 and upon flashing I noticed that only the SIM that had data activated could connect to a network, I dug around a bit and found out that it was trying to connect to a 2G GSM network which no longer exists on my carrier.
I found no other tutorials so if you are stuck this is how I fixed it on my phone.
You need to do this every time your phone restarts until someone finds a way to make it stay like this
1) Open your phone app
It does not need to be the stock app, you just need to open it
2) Enter the following hash code
*#*#4636#*#* THIS IS DIFFERENT FROM THE NORMAL LG HIDDEN MENU
It will look like this
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Then go to phone information
It will look like this
3) Change it from GSM only to LTE / WCDMA
You should now have your service back

i'm unable to go into Phone Information. It shows "This application does not work on this device."
i'm using Singapore variant H930DS. Revert back to Nougat due as i need dual sim to works.

If I only use one sim at a time, would I still have issues with the data connection?

toiret said:
Hi all, I flashed the update from https://forum.xda-developers.com/lg-v30/development/h930-lg-v30-european-market-h930-t3779076 and upon flashing I noticed that only the SIM that had data activated could connect to a network, I dug around a bit and found out that it was trying to connect to a 2G GSM network which no longer exists on my carrier.
I found no other tutorials so if you are stuck this is how I fixed it on my phone.
You need to do this every time your phone restarts until someone finds a way to make it stay like this
1) Open your phone app
It does not need to be the stock app, you just need to open it
2) Enter the following hash code
*#*#4636#*#* THIS IS DIFFERENT FROM THE NORMAL LG HIDDEN MENU
It will look like this
Then go to phone information
It will look like this
3) Change it from GSM only to LTE / WCDMA
You should now have your service back
Click to expand...
Click to collapse
I did this in My G6 H870DS ..
"Installed H870 Oreo on My H870DS"
But signal not works .. Any ideas ?

HuEx said:
I did this in My G6 H870DS ..
"Installed H870 Oreo on My H870DS"
But signal not works .. Any ideas ?
Click to expand...
Click to collapse
Various things to check try...
Your APN is correct and enabled?
Try adding another APN.for your carrier (look up settings online), reboot, see if it acts different.
Try flashing your old modem in dev patched LG LGUP (modem only). May not work as it's Nougat and you're on Oreo now and for a "different" model number, but in Motorola your could flash previous versions. Not sure about LG.
Flash back to Nougat in LGUP.

ChazzMatt said:
Various things to check try...
Your APN is correct and enabled?
Try adding another APN.for your carrier (look up settings online), reboot, see if it acts different.
Try flashing your old modem in dev patched LG LGUP (modem only). May not work as it's Nougat and you're on Oreo now and for a "different" model number, but in Motorola your could flash previous versions. Not sure about LG.
Flash back to Nougat in LGUP.
Click to expand...
Click to collapse
i Cant access APn ..
if u Plz Check this .. https://app.box.com/s/36i65wafqln3bq1pftpth3fx45ieb5rs
i have vodafone and circle above keep moving like searching about signal .. im in area with signal .. "checked this with another one "

ChazzMatt said:
Various things to check try...
Your APN is correct and enabled?
Try adding another APN.for your carrier (look up settings online), reboot, see if it acts different.
Try flashing your old modem in dev patched LG LGUP (modem only). May not work as it's Nougat and you're on Oreo now and for a "different" model number, but in Motorola your could flash previous versions. Not sure about LG.
Flash back to Nougat in LGUP.
Click to expand...
Click to collapse
no .. Apn not enabled .
excuse me .. how to flash old modem ? i dont knw if u plz could explain this point

HuEx said:
no .. Apn not enabled .
excuse me .. how to flash old modem ? i dont knw if u plz could explain this point
Click to expand...
Click to collapse
Show screenshot of APN settings, please. Like this. Because if the APN is correct but not enabled, then you need to turn it on, you need to enable it.
Sent via open market LG US998 V30/V30+

ChazzMatt said:
Show screenshot of APN settings, please. Like this. Because if the APN is correct but not enabled, then you need to turn it on, you need to enable it.
Sent via open market LG US998 V30/V30+
Click to expand...
Click to collapse
i cant access Mobile Networks it cant open cause i think mobile doesnt recognize sim ..
also something i cant flash old modem only .. H870DS "Bootloader Locked "
I Think i will Back to Nougat ..
Thank u ChazzMatt ..
Im so sorry .. Have a Nice Day Bro .. ^^

Bought in USA, can do something to use in EU?

Hey,
I bought an LG G7 ThinQ (LMG710TM) in the USA, and i does not connect to the LTE/4G mobile data network here in Hungary. Since it's a T-mobile version i thought if i could unlock it, it may work (i can use my Telekom SIM since the beggining to call/send msg), but i can't get the unlock bin trough LG site, because it says it's an LMG710TMP version which is unlockable, but the phone itself says it just te TM version withouth the P on the end.
Anyways should I even bother to try to unlock it, because i didn't really find any infos which frequencies are supported by my own device, so it maybe just blocked by the software or not.
Thanks!!

Mr.Tree said:
Hey,
I bought an LG G7 ThinQ (LMG710TM) in the USA, and i does not connect to the LTE/4G mobile data network here in Hungary. Since it's a T-mobile version i thought if i could unlock it, it may work (i can use my Telekom SIM since the beggining to call/send msg), but i can't get the unlock bin trough LG site, because it says it's an LMG710TMP version which is unlockable, but the phone itself says it just te TM version withouth the P on the end.
Anyways should I even bother to try to unlock it, because i didn't really find any infos which frequencies are supported by my own device, so it maybe just blocked by the software or not.
Thanks!!
Click to expand...
Click to collapse
It's not rooted right?
Enter the service menu and check the bands. If it says "SUCCESS" then that band is supported. If it says "FAIL" it's not.
Bands 2, 4 and 12 are the ones usually used with GSM LTE in America.

Falkentyne said:
It's not rooted right?
Enter the service menu and check the bands. If it says "SUCCESS" then that band is supported. If it says "FAIL" it's not.
Bands 2, 4 and 12 are the ones usually used with GSM LTE in America.
Click to expand...
Click to collapse
Thank you for your help!
And yes, it's not rooted.
I checked the service menu, the listed(pic1,pic2) bands are all working, at least it said "SUCCESS" when i clicked on them, and in Hungary they use band 3,7 and 20.
I set it on 3, tried to reinsert simcard and restart phone, and airplane mode etc,etc little tricks to get it work, but still no mobile data.
The weird thing i found is the LTE Carrier Aggregation(pic3,pic4). It says what is says on the picture and i can't change it, because it tells me i need to restart my phone. I did it but no changes, so it just stuck at those options. I suspect the problem is there for some reasons that i don't know.
On pic5/pic6 those are some infos about the LTE stuff, sometimes it said Not Supported Mode at the Mode Pref, sometimes it said Automatic. Sadly i don't really know what that means, maybe it will provide some infos to you.
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Mr.Tree said:
Thank you for your help!
And yes, it's not rooted.
I checked the service menu, the listed(pic1,pic2) bands are all working, at least it said "SUCCESS" when i clicked on them, and in Hungary they use band 3,7 and 20.
I set it on 3, tried to reinsert simcard and restart phone, and airplane mode etc,etc little tricks to get it work, but still no mobile data.
The weird thing i found is the LTE Carrier Aggregation(pic3,pic4). It says what is says on the picture and i can't change it, because it tells me i need to restart my phone. I did it but no changes, so it just stuck at those options. I suspect the problem is there for some reasons that i don't know.
On pic5/pic6 those are some infos about the LTE stuff, sometimes it said Not Supported Mode at the Mode Pref, sometimes it said Automatic. Sadly i don't really know what that means, maybe it will provide some infos to you.
Click to expand...
Click to collapse
Did you contact the mobile provider and ask them to add your phone's IMEI to their service?
In USA, some people who bought the LG unlocked international phones did not have mobile data until they called the carrier and had them register the IMEI number.

You'll most likely need to setup your APN manually. Go to settings-network and add APN info for your provider there!

bdasmith said:
You'll most likely need to setup your APN manually. Go to settings-network and add APN info for your provider there!
Click to expand...
Click to collapse
I set up the APN and it work now. Thank you very much for your help, it's kinda unbelieavable that it was this easy!

Mr.Tree said:
I set up the APN and it work now. Thank you very much for your help, it's kinda unbelieavable that it was this easy!
Click to expand...
Click to collapse
Your welcome. Glad to help ?