T-Mobile SIM unlocked from them, Change to global stock - OnePlus 6T Questions & Answers

What's the easiest way to change over to global stock, with the phone pre unlocked by T-Mobile and updated to the latest already.
There is multiple guides and I'm not sure what's outdated or applies for my current situation? Is jumping to global back to T-Mobile again necessary with my sim already unlocked?

would like to know the answer to this as well. Just got mine unlocked by T-mobile and should have the bootloader unlocked by week's end

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How to Carrier / imei unlock the Huawei Ascend XT ?

Hello,
I just acquired a new 'Huawei Ascend XT' phone which is sim locked to AT&T. I am currently in the process of unlocking the boot loader and rooting the phone.
I was wondering is there any tool available to Carrier / imei unlock this phone after I have rooted it (or may be even befor rooting it)?
Thanks.
I'm fairly certain you just need to change the apn settings manually.. need to do something weird to bring up the option to add/edit, believe it's holding down the tasks button
Without being carrier unlocked, the phone can only be used on AT&T Prepaid, AT&T, or AT&T based MVNOs. These days AT&T won't give you an unlock code unless you use the phone on AT&T Prepaid for 6 months. You can check eBay to see if any unlockers will sell you an unlock code for a few bucks. Only buy from sellers who have a money back guarantee if their unlock code fails.
rhoniel said:
Hello,
I just acquired a new 'Huawei Ascend XT' phone which is sim locked to AT&T. I am currently in the process of unlocking the boot loader and rooting the phone.
I was wondering is there any tool available to Carrier / imei unlock this phone after I have rooted it (or may be even befor rooting it)?
Thanks.
Click to expand...
Click to collapse
Bought 2nd-Hand
I would like to ask if there is any way to carrier unlock. I bought this phone for 20$ on offer up. But when I contacted at&t to request unlock they said it has to be used for 6 months. For me that does not work, as I am already with tMobile and bought the XT for a second phone because of the large device support. I actually love the phone, but as is it is just sitting around. If anyone has or has heard of a way to accomplish an unlock please p.m. Me.or answer in forum. Thanks in advance.
Ps. phone is already bootloader unlocked and rooted with magisk 14.0. And latest TwRP.

Unbranding h910 AT&T

Hi.
I am expecting delivery of an LG V20 h910 from eBay in the coming days, but don't have an AT&T SIM (EU user).
Is there a way to flash an unlocked, stock version of the software (eg US996) so I can update the phone to the latest version?
I heard non-AT&T SIM users don't get updates thru AT&T, so wondering how I can get the latest software for it.
I would prefer not to root the phone, but would do if necessary (and if I can then get a fully functional, up-to-date software version).
Thanks in advance.
AWT86 said:
Hi.
I am expecting delivery of an LG V20 h910 from eBay in the coming days, but don't have an AT&T SIM (EU user).
Is there a way to flash an unlocked, stock version of the software (eg US996) so I can update the phone to the latest version?
I heard non-AT&T SIM users don't get updates thru AT&T, so wondering how I can get the latest software for it.
I would prefer not to root the phone, but would do if necessary (and if I can then get a fully functional, up-to-date software version).
Thanks in advance.
Click to expand...
Click to collapse
First off, if its not sim unlocked phone, it will forever stay sim locked unless you get the network unlock for it. EVEN if you flash any of the other brand roms. Also, AT&T doesn't have the full stock kdz to revert to, there are work arounds to return to stock. This phone has trouble with the screen ghosting/retention, as well as bonkers HDR camera performance, also not to forget, GPS inaccuracy upto 50 meters. I'd suggest look away from LG unless you're going for LG v30 which doesn't carry any of these issues.
If you have already bought, paid and "expecting" shipment anytime soon, you should make sure that its network unlocked H910. (make backup of your partitions before flashing any other brand rom because you will need modem, modemst1, modemst2 and misc partitions in-case you lose the signals). Then you can easily flash it with H915 rom which is the best among debloated stock roms. Flash H910 v10m firmware over it, then flash the modem/modemst1/modemst2/misc files from fastboot to get network signal. From there on forward, you may keep H915 rom with H910 v10m base, or you can even move on to lineage roms. I'd suggest stay rooted with manual color calibration for no-ghosting measures.
AWT86 said:
Hi.
I am expecting delivery of an LG V20 h910 from eBay in the coming days, but don't have an AT&T SIM (EU user).
Is there a way to flash an unlocked, stock version of the software (eg US996) so I can update the phone to the latest version?
I heard non-AT&T SIM users don't get updates thru AT&T, so wondering how I can get the latest software for it.
I would prefer not to root the phone, but would do if necessary (and if I can then get a fully functional, up-to-date software version).
Thanks in advance.
Click to expand...
Click to collapse
You can't flash another variant rom until you unlock the bootloader and root. As far as functionality with the 996 will depend on the bands your carrier supports
Sent from my LG-H910 using XDA Labs
I received my used AT&T V20 yesterday also bought from eBay. I'm on O2 and it works fine. Just be sure your phone is network unlocked. Only thing is the bloatware.
So much misinformation in this thread, but I will just address the original question....
Yes, you can flash the US996 KDZ without rooting .. just flash like you would any other KDZ. You lose some AT&T specific features while running US996, but if you are overseas, I don't think that will bother you.
As far as I know, that will SIM unlock the phone if it is locked. If it doesn't, then the engineering bootloader that you use to root will SIM unlock the phone as well as bootloader unlock it.
So, first try the US996 KDZ, if that doesn't SIM unlock, you will have to root.
-- Brian
CaseyS said:
I received my used AT&T V20 yesterday also bought from eBay. I'm on O2 and it works fine. Just be sure your phone is network unlocked. Only thing is the bloatware.
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Did you get any system updates?
runningnak3d said:
So much misinformation in this thread, but I will just address the original question....
Yes, you can flash the US996 KDZ without rooting .. just flash like you would any other KDZ. You lose some AT&T specific features while running US996, but if you are overseas, I don't think that will bother you.
As far as I know, that will SIM unlock the phone if it is locked. If it doesn't, then the engineering bootloader that you use to root will SIM unlock the phone as well as bootloader unlock it.
So, first try the US996 KDZ, if that doesn't SIM unlock, you will have to root.
-- Brian
Click to expand...
Click to collapse
The phone should come pre-unlocked for all networks. I'm mainly concerned about system updates. US996 sounds good, as I can't use AT&T here (AT&T doesn't exist in my country). Would I be able to update the firmware in any way once US996 KDZ is installed? Thanks in advance.
AWT86 said:
Did you get any system updates?
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Click to collapse
No system updates. Had the latest update with the latest security patch, but I downgraded because I want to root it. Still 7.0, but with a earlier patch level.

LS997 V20 Sprint Oreo Sim Unlock

I ended up purchasing an unlocked LS997 instead of an H918 through my own carelessness. I had intended to put it on T-Mobile, and after reading some found out it will work. However once upgraded to Oreo it would appear the LS997 relocks the and can only be used for Sprint. The phone I got is running software VZD and I'm concerned if I take the Oreo update it will revert and be useless for me. Has anyone successfully updated to oreo to while on another carrier. If I get a Sprint Sim and use it when doing the upgrade does it make any difference? I got it off Swappa from a reseller and there is no way I can find it the original owner to get the unlock through Sprint.

planning on upgrading from a LG G7 to the 6T question regarding root

I'm on T-Mobile so I'll have the T-Mobile variant I apologize if this question has been asked a million times but from what I've read in other threads its Sim unlocking then requesting an unlock.bin from oneplus then boot loader unlock root with magisk. I also read you could change the firmware to international version and also unlock the bootloader is this without having it Sim unlocked and is there any difference between the T-Mobile rom and the international rom? Again I apologize in advance just trying to figure out everything before I grab the phone next week. I'm upgrading to the 6T solely for root. Thank you for your time.
Edit:Already grabbed it and rooted, loving it so far
T-Mo variant can be flashed to international variant then bootloader unlocked. Then root, etc...
Flash the 9.0.11 OOS Firmware. Do not flash the 9.0.12 firmware because OP closed the loophole.
Scott said:
T-Mo variant can be flashed to international variant then bootloader unlocked. Then root, etc...
Flash the 9.0.11 OOS Firmware. Do not flash the 9.0.12 firmware because OP closed the loophole.
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Click to collapse
Ok thank you for the heads up where can I download the firmware
International: https://forum.xda-developers.com/oneplus-6t/how-to/tool-6t-msmdownloadtool-v4-0-oos-9-0-5-t3867448
T-Mo: https://forum.xda-developers.com/oneplus-6t/how-to/tool-t-mobile-oneplus-6t-msmdownloadtool-t3868916
I would download the T-Mo ROM to incase you need to switch back.
Follow the instructions in the posts for a hassle free installation.Also, you might want to take a look at this thread if you want to remove the SIM lock: https://forum.xda-developers.com/oneplus-6t/how-to/guide-sim-unlock-t-mobile-version-type-t3915269
You can unlock your SIM, request a token from OnePlus, and then legit unlock your bootloader on the T-Mo software. I am currently using INT software until my legit unlock token gets here.]Oh and as far as the differences between the two, The INT version does not have Google Feed but it does have advanced reboot menu and a couple other minor things.
Also no T-Mo bloat.
OTher than that they are the same.
Scott said:
International:https://forum.xda-developers.com/oneplus-6t/how-to/tool-6t-msmdownloadtool-v4-0-oos-9-0-5-t3867448
T-Mo:https://forum.xda-developers.com/oneplus-6t/how-to/tool-t-mobile-oneplus-6t-msmdownloadtool-t3868916
I would download the T-Mo ROM to incase you need to switch back.
Follow the instructions in the posts for a hassle free installation.Also, you might want to take a look at this thread if you want to remove the SIM lock: https://forum.xda-developers.com/oneplus-6t/how-to/guide-sim-unlock-t-mobile-version-type-t3915269
You can unlock your SIM, request a token from OnePlus, and then legit unlock your bootloader on the T-Mo software. I am currently using INT software until my legit unlock token gets here.]Oh and as far as the differences between the two, The INT version does not have Google Feed but it does have advanced reboot menu and a couple other minor things.
Also no T-Mo bloat.
OTher than that they are the same.
Click to expand...
Click to collapse
Ok again thank you for the help, it will be nice to have just one phone that's rooted instead of carrying around two, my main phone and a rooted ZTE Zmax from 2014

Bought "Unlocked" phone, has sprint branding, seller insists that's how Samsung works

Bought "Unlocked" phone, has sprint branding, seller insists that's how Samsung works
Hi everyone, I bought a Galaxy S10+SM-G975U (same model that all 4 major US networks use) that was sold as "Unlocked" without specifying that it is Sim unlocked, Network unlocked, or Factory unlocked. Most of the time unless a seller specifies which unlocked then it means the phone is Factory unlocked, I gathered this from 9 years of buying and selling Android devices so it's not just a guess.
When I got the phone Sprint OMADM pops up and tells me I have an incomplete activation, "about phone" told me it was Sprint Network Unlocked; after a week it now says unknown under "Brand" in the "status" section.
The seller said that when you buy a factory unlocked Samsung phone and put in a network sim card that Samsung then loads the branding (bloat in my opinion).
1. Is this true that Samsung could have loaded Sprint OMADM?
2. If true can I remove it so that I don't have to "Force Stop" it after each startup?
3. Is there any piece of software or database that I can look up the origin of this phone so that I can either change my eBay review of the sale and apologize for my mistake, or affirm that indeed the seller failed to disclose branding that he knew wouldn't go away when a buyer puts in an ATT simcard such as I have.
I've read one single thread by a user and not a Samsung official that claims that you can pop in a network sim card and then restart to change some software but I have not found even one more thread mentioning this phenomenon.
My background:
I've bought factory unlocked my Moto Pure X and a OnePlus 5 and neither did any ridiculous **** when I switched networks, so that's why I doubt this claim.
I bought a AT&T branded one for use on TMobile. It kept popping up errors. I flashed the unlocked firmware and it works great. I get unlocked updates and everything. You'll need to look on here but there's a walkthrough somewhere. But there are a few advantages for running the carrier branded version so you could flash the AT&T firmware instead. I wanted less bloat so I went with the unlocked one.
Think this might be the thread:
https://forum.xda-developers.com/s10-plus/how-to/sm-g975u-firmware-downloads-tmo-spr-att-t3908657
That said after I did all this I did read there was going to be a update to the firmware which would do what you described.... Switching firmware based on the sim card. Never seen it happen on mine still on unlocked unbranded firmware. Maybe this phone is running old firmware prior to the update that implemented this?
not normal. LIke you, I purchased an 'unlocked' phone and when I powered on, it was a Verizon phone. I popped in my TMo sim, and it worked OK, but I would get the annoying Verizon popups reminding me that I'm on on their network. I installed the unlocked firmware and it went away.
But there's more: when the phone had a problem, I sent it back to Samsung under warranty (still unlocked) and when it was returned, I just installed the original sim and powered on. Now it seems to be a TMo phone, and when I look at the phone's software version, it shows TMB/TMB/VZW. It's been receiving OTA updates and I've disabled bloatware, so I'm OK with it.
Just to be clear I'm not going to flash anything. I'll just turn around and sell it. I need a stable phone for work and I used to mess around with flashing different roms and while it was fun it was a frequent activity and I don't have time for all the annoying trouble this phone has been. Thanks everyone.
Flashing rom is different from flashing a stock firmware. In your case the only way to be completely off from the previous network you are getting the notification from is to flash a G975U1 or G975U stock firmware which is unbranded or your network branded respectively and you are good to go. I switched my yesterday and am okay ?. I will be happy to assist should you change your mind
HIS YB said:
Flashing rom is different from flashing a stock firmware. In your case the only way to be completely off from the previous network you are getting the notification from is to flash a G975U1 or G975U stock firmware which is unbranded or your network branded respectively and you are good to go. I switched my yesterday and am okay . I will be happy to assist should you change your mind
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Thanks. I'm going to see if it will sell first.

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