Can I flash AT&T firmware to LG G6 T-mobile? - AT&T LG G6 Questions & Answers

Can I flash LG G6 t-mobile to AT&T without root? Got the phone for free.. That's why and I am on AT&T

no.
you would need root.. but if you flash any non-tmo bootloader/modem stuff onto the tmo version it will brick the phone.
tmobile g6 bootstack is different than all other G6 devices. and if you flash tmo boostack onto a non-tmo g6 it'll brick the phone.
all of the other non-tmobile G6 variants have a similar bootstack and could technically be shared as long as the anti-rollback fuse settings matched.

There goes my dream for visual voicemail for AT&T on t-mobile phone

Is the phone unlocked to work with an AT&T SIM? if so, just download the att VVM app in the play store. Did that on my unlocked dual SIM phone.

In G5 we can flash G5 puer rico H820pr on to G5 ATT H820. So G6 we can do the same?

Related

LG v20 US996 ~ Root

https://forum.xda-developers.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594
It states the US996 is compatible, but not "U.S. Cellular" ?
https://www.amazon.com/dp/B01MCRG3H1/ref=cm_sw_r_cp_api_z.IKyb4DDSFDP
Does that mean this US996 is not available for root? Or it wont be rootable after putting in my AT&T sim?
please explain.
There's the US996 factory unlocked variant, then the US Cellular variant. There completely different, the US996 unlocked is rootable, the US Cellular variant is not. Be careful to which one you get. And I'm pretty sure you'll be able to stick an at&t sim in there and still have it working. As I said make sure you get the US996 Unlocked Variant. NOT THE US CELLULAR VARIANT
OneDon said:
There's the US996 factory unlocked variant, then the US Cellular variant. There completely different, the US996 unlocked is rootable, the US Cellular variant is not. Be careful to which one you get. And I'm pretty sure you'll be able to stick an at&t sim in there and still have it working. As I said make sure you get the US996 Unlocked Variant. NOT THE US CELLULAR VARIANT
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is my amazon linked lgv20 the right one?
Ceruleancerise said:
is my amazon linked lgv20 the right one?
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Yes.
OneDon said:
There's the US996 factory unlocked variant, then the US Cellular variant. There completely different, the US996 unlocked is rootable, the US Cellular variant is not. Be careful to which one you get. And I'm pretty sure you'll be able to stick an at&t sim in there and still have it working. As I said make sure you get the US996 Unlocked Variant. NOT THE US CELLULAR VARIANT
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The US Cellular US996 variant is factory/network unlocked but the bootloader is not unlockable (I own one). The US996 US Market version has a bootloader that can be unlocked via the LG website.

Which LG V20 should I buy? Help!

I am looking for an LG V20 that I can unlock the bootloader and root the device. Which variant do you guys recommend? I am currently on ATT and would like to know if the ATT version can be unlocked and rooted. If not which one can I use for ATT and unlock it?
borijess said:
I am looking for an LG V20 that I can unlock the bootloader and root the device. Which variant do you guys recommend? I am currently on ATT and would like to know if the ATT version can be unlocked and rooted. If not which one can I use for ATT and unlock it?
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I think all the variants are currently on versions that have patched Dirty CoW. Up until recently, on T-Mobile, you could at least downgrade with a KDZ, but the latest version has anti-rollback.
I think the US996 might be your best bet. You won't have WiFi calling, but it at least has an official unlock, even if it can't be undone.

Which version of LG v20 to buy?

I want to install custom Rom on LG V20. Which carrier should I get it from, T-Mobile, Att, Sprint, Verizon? Thanks.
You should get the US996 unlocked version. It will work on all the carriers plus you can unlock the bootloader on LG's website. All the others you will need to use Dirty Santa to unlock unless they have newer firmware which cannot unlock yet. You can get the US996 fairly cheap. Just make sure it is the US996 unlocked not the US996 US Cellular version.
Is there a way to tell if a phone is the US Cellular version or the actual unlocked version?
Already got burned once buying a US996 from ebay that was labelled as factory unlocked but it was actually a US Cellular.
I'm hoping there/s something on the sticker under the battery that will have the answers but nothing obvious from what I can see.
Does the US996 model support all TMobile bands including band 12 and VoLTE, wifi calling? Thanks.

LG V20 Sim Network Unlock Code

(mod edit)
zigmuntfavello said:
Hello fellas, I have the LG V20 AT&T phone and I want to be able to use the sim of any network carrier of my choosing and I’ve been told that it's next to impossible to unlock AT&T phones unless you have the stock locked Rom and if I will flash unlocked Rom the phone will be sim free. Would that be correct If that is correct, my question is: Does anyone have unlocked Rom from this phone? At this moment when I insert different carrier sim the phone ask for 8 digit sim network unlock put code. any guide for it or someone with the knowledge to do it or someone pointing towards the right direction would be greatly appreciated!
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From my understanding, and at least on Tmobile, you have to ask the carrier for the sim unlock code. Your phone has to be paid off if you bought the phone through the carrier. This is independent of the rom used. Check this out: https://www.att.com/deviceunlock/#/
zigmuntfavello said:
Hello fellas, I have the LG V20 AT&T phone and I want to be able to use the sim of any network carrier of my choosing and I’ve been told that it's next to impossible to unlock AT&T phones unless you have the stock locked Rom and if I will flash unlocked Rom the phone will be sim free. Would that be correct If that is correct, my question is: Does anyone have unlocked Rom from this phone? At this moment when I insert different carrier sim the phone ask for 8 digit sim network unlock put code. any guide for it or someone with the knowledge to do it or someone pointing towards the right direction would be greatly appreciated!
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Since you are being prompted for a actual unlock code.you do infact have at&t and NOT t mobile device with their garbage unlock app and process.simply look for a unlock code for a "lg v20 h910" or "lg v20 at&t unlock "on ebay.all the other cell unlock sites are a rip off. Codes are pretty cheap like 2 bux or so.now if you had a t mobile device you would have had to jump through a lot of hoops to get it unlocked.luckily you dont.
mattzaher said:
what is the difference between lg v20 H990N, H990DS, H990T, H910, H918, LS997, US996, VS995 for sim unlocking? which one is easier to unlock?
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LG V20 H910 is AT&T version; LG V20 H918 is T-Mobile variant; LG V20 LS997 is for Sprint; LG V20 US996 for US Cellular; LG V20 H990N - for Hong Kong; LG V20 H990DS is Global Dual-SIM version ; LG V20 VS995 Verizon version ; LG V20 H990T for Mexico.
darkknight1812 said:
From my understanding, and at least on Tmobile, you have to ask the carrier for the sim unlock code. Your phone has to be paid off if you bought the phone through the carrier. This is independent of the rom used. Check this out: https://www.att.com/deviceunlock/#/
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....and for tmobile you can't be rooted. I just sucked like that. my t918 is paid off but rooted. Tmobile asked me to use their unlocking app however doesnt work just dont wanna go through hassle going back to stock.
can someone write here the full list of worldwide carriers where v20 is available at this moment?
perryjackson said:
Am use one service to unlock my one phone locked with t-mobile, even my phone does not ask to enter unlock code for unlock,, but i have device unlock app in my phone so i place order to unlock my phone through device unlock app and successfully m phone unlocked . t-mobile doest allow you to leave him, so you have to place order to unlock there is no. of site who provide unlock code or unlock service. if you wish to want to unlock your phone so let me know i will share the link with you for unlock.
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Thx for heads up. Just wonder if it will work with rooted phone? I am very interested !!!
How can I put into the unlock code the phone? Any instruction?
hjpark68 said:
How can I put into the unlock code the phone? Any instruction?
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it should ask for code automatically after rebooting with different carrier sim, if not - then you should use network unlock app for connecting to server and entering code
what is the difference between lg v20 sim unlock code and network unlock code? as I understand sim unlock code is 4 digit and network unlock code is 8 digit, correct?
eldar4uk said:
LG V20 H910 is AT&T version; LG V20 H918 is T-Mobile variant; LG V20 LS997 is for Sprint; LG V20 US996 for US Cellular; LG V20 H990N - for Hong Kong; LG V20 H990DS is Global Dual-SIM version ; LG V20 VS995 Verizon version ; LG V20 H990T for Mexico.
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what about European version of V20? will it work with Sprint/Verizon after unlocking?
julianalaqrua said:
what about European version of V20? will it work with Sprint/Verizon after unlocking?
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yes, it will work. all v20 phones are using the same hardware
ronnycopsetta said:
which version support LTE 2,14,18 bands on 2100Mhz ? I want to make sure that 4g connection will work well after unlocking
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LG V20 LS997 version support all LTE bands, this is US version
is it possible to use this phone (dual sim version) with cdma and gsm carrier at the same time? for example sim1 for at&t and sim2 for sprint ?
eldar4uk said:
LG V20 H910 is AT&T version; LG V20 H918 is T-Mobile variant; LG V20 LS997 is for Sprint; LG V20 US996 for US Cellular; LG V20 H990N - for Hong Kong; LG V20 H990DS is Global Dual-SIM version ; LG V20 VS995 Verizon version ; LG V20 H990T for Mexico.
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how to choose the right model for MetroPCS carrier? as I know they using 2,4 and 14 LTE bands
is it possible to unlock lg v20 sprint phone with "BAD ESN" ?
Unlock code lg v20
Can you please share the site. I am trying to unlock my LG V20 and need help please.
Thanks
Any lg simunlock.com will be deleted as spam
To unlock an LG V20 (lgv20) on AT&T (att) without another network sim:
Dial *#06# on your device to find your IMEI
Get your unlock pin from att.com/deviceunlock
Dial or paste: 2945#*910#
A menu will popup. Choose network lock. Enter the unlock code AT&T gave you.
The phone will restart and be unlocked.
So I got to the unlock screen by entering:
2945#*910#
The 910 is the model number. My phone's Settings > System > About > Hardware Info lists my phone as an LG-H910
So if you're on another network, chances are you could use your model number to get through.

Real-life differences between VS995 and US996 (both unlocked and US Cellular)

Just looking for some clarification here.
I will probably be using this only on Verizon (mvno), though at some point I might like to switch carriers, but if that isn't possible I'll probably live with it.
It appears the US996 is the same as the VS995 except it supports a few more bands.
Am I able to use the US996 (both the unlocked and US Cellular) on Verizon?
Can you actually flash the VS995 firmware onto a US996 (both unlocked and US Cellular)?
If so, then the usable difference between a VS995 and US996 in this case is basically nothing?
If you are planning to use a custom ROM anyway (like Lineage) then is there basically no difference between the 3 models?
I have been using a US996 on Verizon with the VS995 Weta rom for almost a year. I have not gotten Voice over LTE to work, but I have not put in a huge amount of effort. I believe the VS995 has some radio bands the US996 does not, but I have had no issues from that. As far as I can tell everything else works.
I would suggest getting a sim card activated on a Verizon phone and the transferring the sim card to the US996. Verizon would not activate the sim card in the US996 for me.

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