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Hi guys,
I need some clarification re: carrier unlocking and how it works. I recently purchased a carrier unlocked G920T, and I was going to start messing with custom roms/kernels and other goodies. My question is: Will the phone revert back to being locked if I do a factory reset or if I unlock the bootloader and flash custom roms?
I'm not a T-Mobile user, so I can't get another unlock code from them.
Thanks!!
The G920T has a carrier unlocked version, which is probably the one you have, not the T-Mobile one. Even if it is, usually a carrier unlocked device will remain unlocked forever unless it was unlocked using a different or hacky method, then there is a possibility that it will relock
Sent from my SM-G920T using Tapatalk
Yeahh go ahead, mess with it. when it is carrier unlocked, the software doesn't affect it, unless it is a hacky method like @serio22 said, but there isnt such hacky method for the GS6 so have fun.
If it is a G920T (the T means it's from T-Mobile), then carrier unlocking is not a guaranteed state. I paid T-Mobile the full price to get my GS6 and they "permanently" unlocked it. Then after a OTA software patch all of a sudden it locked itself again and I couldn't use my phone for 2 days while they tried to unlock it. T-Mobile's new device unlocking uses a new system which has the phone "phone home" to their servers to check if you're allowed to use it outside of their network. It happened again when I accepted the Android 5.1.1 OTA. So...beware of T-Mobile's not-very-permanent permanent carrier unlocking.
I am living in india..
My relatives brought me the t model ( i wanted f model instead of i sold in india for quicker updates but got t model...lol )
Anyways,
The moment i inserted my sim, it worked like a charm so its unlocked at the moment.
I dont know how they made payment their or how it was unlocked, but the way used must be legit coz its still stock at the moment without root / recovery etc. .
I read humo saying it can get locked again...
My main question, what are the odds of that happening?
Also since i live in india, i wont be able to contact t mobile via phone/walk in, are there ways i can get it unlocked again?
I dont have the bill too if it matters
i believe they have an app that unlock ur device since that is how i unlocked mine. if not u can try to contact customer service online since u r not in US.
With device unlock app , will i have to pay for unlock my s6 g920t or it'll unlock my device for free.
I have an unlocked s6 tmobile from usa, i heard the flashing stock rom will relock the device.
If the phone will relock then how can i unlock it again?
I'm not sure about flashing a stock ROM relocking the device. Mine re-locked when T-Mobile sent Android security patches. This week I did the Android 6.0 OTA update and it has remained unlocked.
Hey guys! i have a factory unlocked version of s6 tmobile, my question is if i can flash the tmobile MM firmware . My model says "country: cellular south" and the firmware country says us tmobile, so i dont know if i can flash without any problems, (Sorry for my english it sucks) thanks !
polipol15 said:
Hey guys! i have a factory unlocked version of s6 tmobile, my question is if i can flash the tmobile MM firmware . My model says "country: cellular south" and the firmware country says us tmobile, so i dont know if i can flash without any problems, (Sorry for my english it sucks) thanks !
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Click to collapse
Polio, i have the same phone and i flashed MM without any problems. Check out the q&a section here and theres a recent thread that talks about how to that refers to a reddit post
Sent from my SM-G920T using XDA-Developers mobile app
bitbank said:
If it is a G920T (the T means it's from T-Mobile), then carrier unlocking is not a guaranteed state. I paid T-Mobile the full price to get my GS6 and they "permanently" unlocked it. Then after a OTA software patch all of a sudden it locked itself again and I couldn't use my phone for 2 days while they tried to unlock it. T-Mobile's new device unlocking uses a new system which has the phone "phone home" to their servers to check if you're allowed to use it outside of their network. It happened again when I accepted the Android 5.1.1 OTA. So...beware of T-Mobile's not-very-permanent permanent carrier unlocking.
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Click to collapse
How did you solve this? My phone stopped working flashed newest (G920TUES5DPK1_G920TXAR5DPK1_G920TUES5DPK1_HOME.tar.rar) and i can't go to older version as that gives me ;
Code:
SW REV. CHECK FAIL DEVICE: 5 BINARY: 3
Christiaanjadieja said:
How did you solve this? My phone stopped working flashed newest (G920TUES5DPK1_G920TXAR5DPK1_G920TUES5DPK1_HOME.tar.rar) and i can't go to older version as that gives me ;
Code:
SW REV. CHECK FAIL DEVICE: 5 BINARY: 3
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Click to collapse
You can't downgrade your bootloader so you'd have to pay to unlock it unfortunately
crixley said:
You can't downgrade your bootloader so you'd have to pay to unlock it unfortunately
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Click to collapse
Got it done remotely!
I have a Galaxy S6 (SM-G920T) from T-Mobile. It was locked. But it has an "Unlock" app installed by default. I used it and phone was instantly unlocked! Fast, easy and free!
I used to live in the US for a year and bought a g920T. Since i had the requirements i Unlocked and came back to my country but because of a problem, I had to install a stock firmware and now the unlock is gone.
So i'm wondering, if someone with a unlocked phone made firmware backup, remove the IMEI, and send it online would it work? I mean, right now it works just fine, so i can backup my IMEI and ID and just restore it if needed.
Please help
danveer said:
I am living in india..
My relatives brought me the t model ( i wanted f model instead of i sold in india for quicker updates but got t model...lol )
Anyways,
The moment i inserted my sim, it worked like a charm so its unlocked at the moment.
I dont know how they made payment their or how it was unlocked, but the way used must be legit coz its still stock at the moment without root / recovery etc. .
I read humo saying it can get locked again...
My main question, what are the odds of that happening?
Also since i live in india, i wont be able to contact t mobile via phone/walk in, are there ways i can get it unlocked again?
I dont have the bill too if it matters
Click to expand...
Click to collapse
I am in same scenario as you are/were,I am also having s6 (Tmobile) please tell me did flashing relocked your device?
So far no
I have flashed recovery - custom rom - kernel
Messed up sometimes so even went back to stock using odin then flashed everything again
Its still unkocked
Hello! I've bought my S6 (SM-G920T) as carrier unlocked but when my pcb has burned due to factory fault and sent my phone to Samsung they gave me again it was locked. I'm from Argentina and I haven't T-Mobile sim to unlock with default application. I've called to my carrier in Argentina and they said me the IMEI it's unlocked but my phone still sais it's network blocked... Can anybody help me?
vita_lp said:
Hello! I've bought my S6 (SM-G920T) as carrier unlocked but when my pcb has burned due to factory fault and sent my phone to Samsung they gave me again it was locked. I'm from Argentina and I haven't T-Mobile sim to unlock with default application. I've called to my carrier in Argentina and they said me the IMEI it's unlocked but my phone still sais it's network blocked... Can anybody help me?
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Click to collapse
Have you tried with the tmobile device unloced app.? If that doesnt work then head over to this awesome guy, he can help you unlock it remotely. https://forum.xda-developers.com/tmobile-galaxy-s6/general/sim-unlock-honestly-free-t3601740
Hey:
Trying to help a friend unlock the bootlaoder on his S5 g900a. Was reading a how-to thread on this site, but now, can't find it. I want everyone to understand something...this is an S5 g900a, meaning; sold by AT&T. This particular model is a different animal than other S5's. AT&T 'locked" (or had Samsung) the bootloader. You CANNOT root this phone!!! and, so far, cannot unlock the factory 'locked" bootloader. So, need to unlock this phones bootloader using D/l software and instructions. His phone is running Mm 6.0.1 w/ 8Gb SD card. Someone here know what I'm discussing and could help?
THANX:
RICK
There are multiple threads that answer this...the Bootloader can not be unlocked at this time.
johnkirchner said:
There are multiple threads that answer this...the Bootloader can not be unlocked at this time.
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Evening John:
Not meaning to contradict or argue, but could you explain how/why E-Bay sells that particular model (g900a--AT&T) 'unlocked"...which couldn't be accomplished without unlocking the bootloader?
Rick
It's probably SIM unlocked meaning you can use on any carrier that uses a SIM card. Trust me the bootloader is locked tighter than fort Knox. There are some working on trying to unlock it though.
Hello all,
I have a newbie question - please be patient and point me in the right direction. (And yes I did use Google first).
The question is about rooting the (Canadian) S20 FE 5G.
I understand there are different ways to root - and all require unlocking.
For unlocking there are two sets of instructions
- one instruction says I go into developer settings, select unlock and all is good
- the other instructions advise that one has to pay to have this unlocked (to some guy on Telegram) and the price is pretty expensive.
So which one is it?
I am considering the S20 FE and rooting would be one of the first things -so I would like to know if that comes at an extra cost or not.
Thank you for any pointers!
if you have a Canadian FE and it's firmware is earlier than March (as I understand things) you can ONLY pay via the man on telegram to get it unlocked. if your firmware is after March even that might not work for you.
all Qualcomm phones sold in the US and Canada can't be unlocked via simply toggling OEM unlocking in developer options.
As 3mel said "... all Qualcomm phones sold in the US and Canada can't be unlocked via simply toggling OEM unlocking in developer options"
too many folks just don't get that !!!
As far as paying > some person online- True But ... at this time, there are a few that say they do the S20 FE 5G cheap too. Either via Email or Their App.
All I Do Know, is IF you do this, You will not get any OEM updates, (Seeing how they (samsung) that the S20 FE 5G will see 3 major updates at least, came with 10, we are on 11, and so 12 is coming)
Yes, I see you may not wat to have read that, but, with the Carrier unlocked, and Root, am sure in a short time, we can see many different roms for these Newer Phones...
if you remove root and any custom recovery (usually by just flashing stock over everything) you will start receive OTA updates again.
that's even if the bootloader is still unlocked!!
I doubted this at first but it worked for me. plus updating and reapplying root isn't that hard once you've got a decent idea about what each step is doing and why it needs to be done.
Sorry to just drop a question, but I can't find the answer. Can the snapdragon S10 SM-G973u1 bootloader be unlocked? If not is there another way to root it?
Thank you
Chris
HelloChris333333, just when you post on a forum the courtesy of saying hello. Yes you can root just with the firmware of your model S10 SM-G973U1 US model so not compatible with EU firmware.
meric57 said:
HelloChris333333, just when you post on a forum the courtesy of saying hello. Yes you can root just with the firmware of your model S10 SM-G973U1 US model so not compatible with EU firmware.
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I'm not sure that's true, but I would love to find out I'm wrong.
In my research, the SD phones cannot be unlocked unless you are on (and remain on) an older BL version. The last unlockable BL version was 4, as I recall... if you're running updated firmware you are likely on BL 6. Even on 4, the process was not free and once you did it you could not update to a newer version of FW without losing the unlock.
For this reason, I gave up on getting root/BLunlock on my phone... and honestly, I have not missed it. This is also why I have not seen much development of FW for the SD phones anywhere.
Again, if I'm wrong, I'd love to learn how it's done!
Hello meric57
Can you share a link to the firmware I need? I just bought this phone and there is no OEM unlock option, it is a US phone. If I cannot root it I will have to sell it and get another phone.
Thanks
Chris
I guess another question would be where can I get a S10 with the Exynos chip?
Thanks
Chris
Using ADB I keep getting "waiting for device" and then I find I need to unlock the bootloader. This crap is an endless circle.
U4 can be unlocked before , I can unlock it , Special engineering documents need to be made
I'm V6 nothing available. I bought a G973F instead. G973u1 going on ebay.
Exactly, there is really no root/unlock for snapdragon phones unless you're on a very old BL (and you have to stay there so you can't update). IMO, that's not "can be unlocked" even with "special" steps, particularly since most phones today will have newer BLs (even a year ago, I couldn't find a BL4 phone)... but, yes, it's technically true to say it can be unlocked, but only in very limited cases.
@Chris33333 For this reason, I get that you may want to go to the Exynos instead... I'm curious, if you're in the US, how does that work with carriers? Does it? I've found most US carriers refuse to activate phones that don't match their list of "compatible" IMEIs... I imagine an F-series phone won't be on that list.
I'm in the US using Straight Talk with T-mobile. I've had a Galaxy S5 rooted for years. With straight talk I can use AT&T, T-mobile, or Verizon. But this international phone does not do Verizon.
And StraightTalk will activate the F-series phone without complaint or issues? If so, that's great to hear... because I know VZ and ATT typically won't...
I haven't put the SIM in it yet. Still trying to delete all the crap off the phone.
Lol
Hello Chris33333, https://www.sammobile.com/samsung/galaxy-s10/firmware/SM-G973U1/XAA/
Hello,
I recently got a new S21 Ultra and I was trying to unlock the bootloader & flash stuff.
I haven't rooted phones for a few years, so I am unsure how much has changed. As far as I know, EU Exynos models have unlockable bootloaders, don't they? My S8 did back then.
As I noticed the OEM Unlock option Is missing from the dev. settings. Fastboot can't seem to detect the device either. If I go to DL mode, I see a line OEM Lock: on(L).
My build number is: G998BXXS6EWBB
One UI: 5.1
Is my BL completely locked or is there any hope that it can be unlocked?