Tmobile to AT&T - AT&T LG G3

I have the LG G3 on a custom Rom for Tmobile. I'm switching over to At&t tomorrow and taking the phone with me. Can I just install a stock based rom over my tmobile stock rom or do I need to follow a method. Please and thank you for any support or point in the right direction.
Its Rooted with TWRP installed already.

Erock2k4 said:
I have the LG G3 on a custom Rom for Tmobile. I'm switching over to At&t tomorrow and taking the phone with me. Can I just install a stock based rom over my tmobile stock rom or do I need to follow a method. Please and thank you for any support or point in the right direction.
Its Rooted with TWRP installed already.
Click to expand...
Click to collapse
Yes you can. But roms don't affect what carrier there on.
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hyelton said:
Yes you can. But roms don't affect what carrier there on.
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Awesome! I never took my phones with me when I switched carriers so I always had to start fresh so I wasnt sure if I needed to go to stock in order to remove any tmobile bloatware.. Thanks

Erock2k4 said:
Awesome! I never took my phones with me when I switched carriers so I always had to start fresh so I wasnt sure if I needed to go to stock in order to remove any tmobile bloatware.. Thanks
Click to expand...
Click to collapse
Yeah the rim does not affect the carrier. Why where you running a D851 rom on a D850? Wifi calling?
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You dont really need to do anything as TM and ATT use the same LTE bands and share IMEI databsae info. I had a TM note3 that I used on ATT until I got a G3. The ATT sim will register you on the network and you'll want to make sure you have the correct APN settings ( The ATT store can do it while your there or can tell you what's needed) The only issue I had was the TM modem didn't always get great signal and wouldn't place calls in some areas. Not sure of G3 but ATT modem wouldn't flash on my note 3 via odin or otherwise... Cheers!

hyelton said:
Yeah the rim does not affect the carrier. Why where you running a D851 rom on a D850? Wifi calling?
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
I have a D851 with tmobile service at this moment

Related

Sprint LTE

I have a new N5 and its unlocked and rooted. I get LTE just fine on the stock rom but when I flash any custom roms, LTE doesn't work. Even when I restore my backed up EFS on the custom rom, LTE still doesn't work. Anytime I nandroid back to my stock rom, LTE works fine. Any ideas or help will be appreciated.
cbond007 said:
I have a new N5 and its unlocked and rooted. I get LTE just fine on the stock rom but when I flash any custom roms, LTE doesn't work. Even when I restore my backed up EFS on the custom rom, LTE still doesn't work. Anytime I nandroid back to my stock rom, LTE works fine. Any ideas or help will be appreciated.
Click to expand...
Click to collapse
Did you flash Sprint software? It could be the APN.
What sprint software? forgive me im new to this. I did make a backup of my apn of my stock rom and restored it when i flashed a custom rom, but it didn't make a difference.
MrObvious said:
Did you flash Sprint software? It could be the APN.
Click to expand...
Click to collapse
cbond007 said:
What sprint software? forgive me im new to this. I did make a backup of my apn of my stock rom and restored it when i flashed a custom rom, but it didn't make a difference.
Click to expand...
Click to collapse
I think there's some extra APKs you need to add to custom ROMs.
I fixed the issue. I unrooted and returned my phone back to stock. Then I found a sprint. Zip that you flash with custom roms and that worked.
Sent from my Nexus 5 using Tapatalk
Could you provide the link please?
Super powered Nexus 5 running Carbon/ElementalX
I'm on Sprint and I've flashed most of the custom roms for N5 with zero LTE issues. Which rom did you flash?
There is no custom sprint software this is a Google phone.
Sent from my Nexus 5 using Tapatalk now Free
polska2180o said:
There is no custom sprint software this is a Google phone.
Sent from my Nexus 5 using Tapatalk now Free
Click to expand...
Click to collapse
Exactly
Sent by mobile telephone.
Check the APN settings. On AT&T I have to tweak my settings to get LTE instead of H+.
peecs121 said:
Could you provide the link please?
Super powered Nexus 5 running Carbon/ElementalX
Click to expand...
Click to collapse
https://www.copy.com/s/wFfte/sprint.zip
Sent from my Nexus 5 using Tapatalk
cbond007 said:
https://www.copy.com/s/wFfte/sprint.zip
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
What is this? Is there a thread for the download?
ColeTrain! said:
What is this? Is there a thread for the download?
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Click to collapse
Its a zip to flash after roms that sets the correct APN settings for sprint. I can't remember the thread I found it in though. But it was for the same issue I was having with my LTE/3g switching.
cbond007 said:
Its a zip to flash after roms that sets the correct APN settings for sprint. I can't remember the thread I found it in though. But it was for the same issue I was having with my LTE/3g switching.
Click to expand...
Click to collapse
The reason I am searching through posts is this: my 3G works fine. But when it kicks over to LTE... Nothing happens... In a minute or two I may get 4 mbs or something pretty good and then nothing again. I need it to actually work. My wife has the same issue on her S4 and she is stock. It switches over to LTE.... Nothing. I have LTE off mostly. Steady slow 3g is better than no progress on LTE.
update profile
Should provide the correct settings in the custom Roms assuming the creator added the update profile features. I know cm does
ColeTrain! said:
The reason I am searching through posts is this: my 3G works fine. But when it kicks over to LTE... Nothing happens... In a minute or two I may get 4 mbs or something pretty good and then nothing again. I need it to actually work. My wife has the same issue on her S4 and she is stock. It switches over to LTE.... Nothing. I have LTE off mostly. Steady slow 3g is better than no progress on LTE.
Click to expand...
Click to collapse
I was having similar issues with LTE. The zip worked for me. Hope it can for you
Sent from my Nexus 5 using Tapatalk

Use att g3 on sprint?

Rooted and cloudy, how do I make it work on sprint.
muppetmaster916 said:
Rooted and cloudy, how do I make it work on sprint.
Click to expand...
Click to collapse
You don't... Rooted and custom rom have nothing to do with using it on another carrier. Sprint is CDMA. AT&T is GSM not possible.
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Lg g3 at&t factory unlocked firmware update question

Hey guys, I recently purchased an LG G3 AT&T Factory unlocked so other network carriers can be used. But when I click software update it already says I'm updated (CURRENTLY RUNNING LOLLIPOP 5.0.1) so I assume you need to have an AT&T sim card to update your software.
Is there like any way to bypass that so I can update my phone to android 6.0? If so how? and would I need to have it factory unlocked again?
I'm new to this, so detailed explanation would be deeply appreciated!
Cheers!
Nonu485 said:
Hey guys, I recently purchased an LG G3 AT&T Factory unlocked so other network carriers can be used. But when I click software update it already says I'm updated (CURRENTLY RUNNING LOLLIPOP 5.0.1) so I assume you need to have an AT&T sim card to update your software.
Is there like any way to bypass that so I can update my phone to android 6.0? If so how? and would I need to have it factory unlocked again?
I'm new to this, so detailed explanation would be deeply appreciated!
Cheers!
Click to expand...
Click to collapse
The AT&T model does not come factory unlocked. It's a carrier model and has to be manually unlocked. So if you bought it new it cannot be new as the seller would of had to open it to unlock it.
But no there is no other way to do OTA updates on it without an AT&T sim, go phone sim , or H2O prepaid sim.
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hyelton said:
The AT&T model does not come factory unlocked. It's a carrier model and has to be manually unlocked. So if you bought it new it cannot be new as the seller would of had to open it to unlock it.
But no there is no other way to do OTA updates on it without an AT&T sim, go phone sim , or H2O prepaid sim.
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
Could I possibly download the official release rom and install it manually using a PC?
Nonu485 said:
Could I possibly download the official release rom and install it manually using a PC?
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Click to collapse
Yes but the latest is KitKat so you would be downgrading. Since its the AT&T model it's tot method only. And the latest tot file is kitkat.
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H2O sim
Can the H2O sim work outside the US
hyelton said:
The AT&T model does not come factory unlocked. It's a carrier model and has to be manually unlocked.
But no there is no other way to do OTA updates on it without an AT&T sim, go phone sim , or H2O prepaid sim.
Click to expand...
Click to collapse
OTA updates won't work with other AT&T MVNOs besides H20?
lmacmil said:
OTA updates won't work with other AT&T MVNOs besides H20?
Click to expand...
Click to collapse
Like? And no usually not.
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hyelton said:
Like? And no usually not.
Click to expand...
Click to collapse
Like Consumer Cellular.
Lg g3 at&t factory unlocked firmware update question
lmacmil said:
Like Consumer Cellular.
Click to expand...
Click to collapse
No it wouldn't work with that.
H2O sims can be gotten for under $1 on Amazon or eBay. And you don't have to add money to activate them.
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hyelton said:
No it wouldn't work with that.
H2O sims can be gotten for under $1 on Amazon or eBay. And you don't have to add money to activate them.
Click to expand...
Click to collapse
So if I got a used AT&T G3, I could buy an H2O sim, activate it, get the OTA Marshmallow update, the remove that sim and put in my CC sim? Even if I had to buy the $10 Paygo plan, it would be worth it
lmacmil said:
So if I got a used AT&T G3, I could buy an H2O sim, activate it, get the OTA Marshmallow update, the remove that sim and put in my CC sim? Even if I had to buy the $10 Paygo plan, it would be worth it
Click to expand...
Click to collapse
Yes you can. As long as the used G3 was not rooted you can OTA update.
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hyelton said:
Yes you can. As long as the used G3 was not rooted you can OTA update.
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Click to expand...
Click to collapse
Will an unlocked D850 receive the update or does it still have to be locked to AT&T? A lot of D850s on eBay are unlocked.
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lmacmil said:
Will an unlocked D850 receive the update or does it still have to be locked to AT&T? A lot of D850s on eBay are unlocked.
Sent from my Nexus 7 using XDA Free mobile app
Click to expand...
Click to collapse
The unlocked ones will get the updates just fine. But you still will need an active AT&T sim or H2O sim to get the update.
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hyelton said:
The unlocked ones will get the updates just fine. But you still will need an active AT&T sim or H2O sim to get the update.
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Click to collapse
Roger that. Thanks. (Still watching Ebay auctions waiting for a deal!) ?
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Hey were you able to install marshmallow on at&t D850 by ordering H2O sim?
Please do mention when you inserted that sim then you were in H2O network range or overseas? (as I am in New Zealand)
and how did you manage to install after inserting sim?
Thanks for helping pal.
lmacmil said:
Like Consumer Cellular.
Click to expand...
Click to collapse
hyelton said:
No it wouldn't work with that.
H2O sims can be gotten for under $1 on Amazon or eBay. And you don't have to add money to activate them.
Click to expand...
Click to collapse
Actually, you should get OTA updates on Consumer Cellular. They are my carrier and I have received several updates on my AT&T G3, including one just today. New software version is now D85030p.
lmacmil said:
Roger that. Thanks. (Still watching Ebay auctions waiting for a deal!) ?
Click to expand...
Click to collapse
Word of caution. Be familiar with how to revert to KK using the tot method. I say this because if the phone has been rooted, and all that was done was uninstall the root app and factory reset, the phone may not take an OTA update as it will read the system as modified. Plenty of discussion on this here in the forums. Also keep in mind that there is no permanent root method for MM as of yet.
aybarrap1 said:
Word of caution. Be familiar with how to revert to KK using the tot method.
Click to expand...
Click to collapse
I bought a 2015 Moto G instead of the LG G3. Decided to go with something not quite so large and with manufacturer (as opposed to carrier) support for MM. After looking at them "in the flesh" I decided the G3 was a larger phone than I wanted. Thanks for your help.
Rcovery problem
Hi, I have LG G3 D850.I am from Bulgaria my phone is from USA. I want to update it 6.0 with CM13 official but when i installed TWRP it says that i don't have root access. Can you help me ?
tolev65 said:
Hi, I have LG G3 D850.I am from Bulgaria my phone is from USA. I want to update it 6.0 with CM13 official but when i installed TWRP it says that i don't have root access. Can you help me ?
Click to expand...
Click to collapse
Not sure why your posting in this thread, CM 13 is not stock or official firmware. You first need to ROOT your device.
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(Q) How to install 6.0 in a D850 outside USA

Hi guys i need to know how to install a d850 6.0 software outside USA since im from Argentina i dont have a at&t sim card.
Is there any kdz software or something?.
Can i install d855 without any issue or hard brick?.
Thanks.-
lapocha5 said:
Hi guys i need to know how to install a d850 6.0 software outside USA since im from Argentina i dont have a at&t sim card.
Is there any kdz software or something?.
Can i install d855 without any issue or hard brick?.
Thanks.-
Click to expand...
Click to collapse
This has already been discussed many of times. And nothing has changed. You MUST use an AT&T or h2o SIM card to get the update. The D850 is tot only there's no kdz for AT&T models. And no you cannot flash wrong model firmware.
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hyelton said:
This has already been discussed many of times. And nothing has changed. You MUST use an AT&T or h2o SIM card to get the update. The D850 is tot only there's no kdz for AT&T models. And no you cannot flash wrong model firmware.
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Click to collapse
Ok thanks, so im stuck at 5.0.1 and my only option is cyanogenmod.
Thanks.
Please close this post.
lapocha5 said:
Ok thanks, so im stuck at 5.0.1 and my only option is cyanogenmod.
Thanks.
Click to expand...
Click to collapse
You can also see if there is a stock based flash able custom rom. But haven't looked in awhile for the AT&T model.
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I'll chime in with the reminder that after updating to stock MM, you might never be able to rollback to an earlier firmware or root the device should you decide that you would like to do so.
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SofaSpud said:
I'll chime in with the reminder that after updating to stock MM, you might never be able to rollback to an earlier firmware or root the device should you decide that you would like to do so.
Sent from my LG-D801 using Tapatalk
Click to expand...
Click to collapse
Thank you, i´ll stay in 5.0.1. which is working just fine till cm 14 arrives (if it does).

TMO OnePlus 7 Pro

So... I have sim unlock, received bootloader unlock code from one plus... now what? From what I have read, I am able to root the stock firmware with Magisk.
If I want to go the custom rom route, it looks like a majority of the roms are based on international version and I need to convert to international first.
I did hear the TMO firmware is optimized for their Network for volte and wifi calling, so if I do change to international, what will be the advantages/disadvantages?
Sent from my GM1915 using Tapatalk
I'm using the int version of the OP7P with a TMO US Sim and cannot report any problems, VoLTE and VoWifi do work.
I think @joemossjr found there may be a LTE band priority difference between international and T-Mobile specific ROMs. TBH, I stick to an official T-Mobile ROM primarily because I want to get the best possible performance on T-Mobile's network.
I'm on T-Mobile, but have a rooted international rom installed. VoLTE and VoWifi ALWAYS work without issues.
king3opobn said:
I'm on T-Mobile, but have a rooted international rom installed. VoLTE and VoWifi ALWAYS work without issues.
Click to expand...
Click to collapse
So what's the advantage for a rooted international rom vs a rooted tmo rom?
My understanding is that most of the custom ROMs available are based off that version, but if I stay stock and rooted, other than updates coming faster, would there be any reason to do the conversion?
Sent from my GM1915 using Tapatalk
mjdavis871 said:
So what's the advantage for a rooted international rom vs a rooted tmo rom?
My understanding is that most of the custom ROMs available are based off that version, but if I stay stock and rooted, other than updates coming faster, would there be any reason to do the conversion?
Click to expand...
Click to collapse
Well, the international rom comes straight from oneplus, so it won't be over bloated with T-Mobile background apps. Won't have the magneta boot screen. Of course these things can be delt with in a rooted tmobile rom version. So mainly quicker updates (fixes).
Thanks for the feedback. I know the international version is way more popular than tmo, so the conversion is inevitable. Maybe someone will be able to work some magic and be able to help us figure out what the tmo optimizations are and have some kind of patch we can zip with twrp.
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mjdavis871 said:
Thanks for the feedback. I know the international version is way more popular than tmo, so the conversion is inevitable. Maybe someone will be able to work some magic and be able to help us figure out what the tmo optimizations are and have some kind of patch we can zip with twrp.
Click to expand...
Click to collapse
That would be awesome! But yeah, I'd like to know if there's a huge difference in the mobile data or whatever compared to the T-Mobile rom as well.
Anyone know? I'm just wondering if the only advantage using the T-Mobile rom over the International one is better Volte and Vowifi? Or are they pretty much the same?
Using the int version (bought it to avoid the unlock and reflash hassl, return the TMO OP7P.to the TMO shop after I found out after having asked when buying) with US and DE TMO sims, I did not find any issues. The OP7P finally supports VoLTE and VoWiFi with German TMO which the OP6 did not.
The only thing I've noticed so far running International on T-Mobile is a couple times I've lost signal completely and I'll get two SIM card symbols in my staus bar until I reboot. Otherwise it's been perfect.
I'm on TMO, bootloader unlock, rooted with twrp installed, for some reasons i can't install adaway it says not enough storage. I have plenty of storage like 230G. Can't find any answer as to why.
boybkol said:
I'm on TMO, bootloader unlock, rooted with twrp installed, for some reasons i can't install adaway it says not enough storage. I have plenty of storage like 230G. Can't find any answer as to why.
Click to expand...
Click to collapse
This link might be related. Good luck!
Also, some address that issue in the XDA thread if you search keyword partition: https://forum.xda-developers.com/showthread.php?t=2190753
jhofseth said:
This link might be related. Good luck!
Also, some address that issue in the XDA thread if you search keyword partition: https://forum.xda-developers.com/showthread.php?t=2190753
Click to expand...
Click to collapse
It worked. Thank you.?

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