I live in China. I bought G710EM from Germany.But when I insert a stupid SIM card, it shows network locked.Isn't G710Em the unlocked version.How can ability unlock.
You have to make a call of 30 min to unlock it I think. Is to prevent people from other countries to buy models from other countries.
You don't have to make a 30 min call. Your European phone has to be locked in in a European network with a European SIM card for at least 30 min.
Than you can use it with any SIM card and network.
I have this problem too. There is any option to override this lock?
I cannot go to Europe to unlock the phone
gilad9700 said:
I have this problem too. There is any option to override this lock?
I cannot go to Europe to unlock the phone
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Click to collapse
You can try custom ROM but I'm not sure if it's an firmware thing or system
Hey all,
I was given an S9 (Exynos version, unlocked, SM-960F/DS) that had TWRP installed on it, but was stuck in a boot loop. After messing with it for a while, I stuck it in a drawer and forgot about it until recently, when I pulled it out and decided to just restore it to stock. I downloaded a ROM for that specific model from this site ( https://forum.xda-developers.com/galaxy-s9/how-to/official-firmware-thread-regions-t3765015 ) and flashed it using Odin. This got the device to boot fine to the setup, but it defaulted to German, and rejected any SIM I put in it, even though the phone was originally unlocked. So my question is, now how do I remove the SIM lock again? I'm guessing I'll first have to wait the 7 days for the OEM unlock cooldown to elapse again so I can reinstall TWRP?
tattar8 said:
Hey all,
I was given an S9 (Exynos version, unlocked, SM-960F/DS) that had TWRP installed on it, but was stuck in a boot loop. After messing with it for a while, I stuck it in a drawer and forgot about it until recently, when I pulled it out and decided to just restore it to stock. I downloaded a ROM for that specific model from this site ( https://forum.xda-developers.com/galaxy-s9/how-to/official-firmware-thread-regions-t3765015 ) and flashed it using Odin. This got the device to boot fine to the setup, but it defaulted to German, and rejected any SIM I put in it, even though the phone was originally unlocked. So my question is, now how do I remove the SIM lock again? I'm guessing I'll first have to wait the 7 days for the OEM unlock cooldown to elapse again so I can reinstall TWRP?
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Click to collapse
TWRP/Root/Custom has nothing to do with SIM locks, you'd need a sim unlocking service for that
*Detection* said:
TWRP/Root/Custom has nothing to do with SIM locks, you'd need a sim unlocking service for that
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Click to collapse
Then why would the phone start demanding a PUK for any SIM I insert into it after flashing, when it didn't before? The SIMs work on any other phone I try them in.
tattar8 said:
Then why would the phone start demanding a PUK for any SIM I insert into it after flashing, when it didn't before? The SIMs work on any other phone I try them in.
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Because certain SIM unlocking services depend on you not wiping the phone in order to keep the unlock
You'll need to unlock it again using a paid service
*Detection* said:
Because certain SIM unlocking services depend on you not wiping the phone in order to keep the unlock
You'll need to unlock it again using a paid service
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Click to collapse
The phone was never locked to a carrier -- it was purchased sealed, factory unlocked.
tattar8 said:
The phone was never locked to a carrier -- it was purchased sealed, factory unlocked.
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Click to collapse
In that case check it has not been IMEI blacklisted due to non payment of contract or reported stolen, you state in your OP it was given to you
If it is IMEI blocked there's nothing XDA can do to help you
*Detection* said:
In that case check it has not been IMEI blacklisted due to non payment of contract or reported stolen, you state in your OP it was given to you
If it is IMEI blocked there's nothing XDA can do to help you
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Click to collapse
What I meant by that was that a friend of mine handed it to me to try to fix after he messed with it in TWRP, getting it stuck bootlooping in the process. He had bought it factory unlocked. I checked the IMEI, it's clean. It's demanding PUKs for any SIM I put in it, even though those SIMs work in other phones; I tried a Ting SIM and a Cricket SIM.
tattar8 said:
What I meant by that was that a friend of mine handed it to me to try to fix after he messed with it in TWRP, getting it stuck bootlooping in the process. He had bought it factory unlocked. I checked the IMEI, it's clean. It's demanding PUKs for any SIM I put in it, even though those SIMs work in other phones; I tried a Ting SIM and a Cricket SIM.
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Click to collapse
Well the only thing I can think is to flash a stock firmware for the region you are in, pick a carrier firmware to force the CSC change, Multi-CSC that contains Germany will default back to that if that is what the phone's original CSC was, but I doubt CSC is causing this
O2U CSC (United Kingdom) for G960F is a single CSC, flash it using CSC and not HOME_CSC along with the other 3 sections
But it seems to me this was not originally a factory unlocked handset, it was unlocked by an unlocking service and sold as one
If that doesn't work, pay for an unlocking service
*Detection* said:
Well the only thing I can think is to flash a stock firmware for the region you are in, pick a carrier firmware to force the CSC change, Multi-CSC that contains Germany will default back to that if that is what the phone's original CSC was, but I doubt CSC is causing this
O2U CSC (United Kingdom) for G960F is a single CSC, flash it using CSC and not HOME_CSC along with the other 3 sections
But it seems to me this was not originally a factory unlocked handset, it was unlocked by an unlocking service and sold as one
If that doesn't work, pay for an unlocking service
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Click to collapse
Is there a way I can find out what carrier the phone thinks it's locked to, or would I just have to get SIM cards from around the world and try them?
Can I do this without enabling OEM Unlock (so without letting the phone run for 7 days)?
tattar8 said:
Is there a way I can find out what carrier the phone thinks it's locked to, or would I just have to get SIM cards from around the world and try them?
Can I do this without enabling OEM Unlock (so without letting the phone run for 7 days)?
Click to expand...
Click to collapse
Samsung Phone INFO will tell you the current CSC, but if it defaulted to German either you flashed a German firmware or that is the default CSC
OEM unlock is only needed for custom
Flashing a Multi-CSC ROM such as BTU for United Kingdom will have the greatest chance of it defaulting to it's original CSC
I used that app, and it indeed says the phone's CSC is German, Deutsche Telekom from what I could tell. I tried flashing a number of different FW packages (including the UK and Singapore ones) but it still defaulted to German each time.
I tried going to their unlock page and entering the IMEI, but they have no record of it being sold by them.
tattar8 said:
I used that app, and it indeed says the phone's CSC is German, Deutsche Telekom from what I could tell. I tried flashing a number of different FW packages (including the UK and Singapore ones) but it still defaulted to German each time.
I tried going to their unlock page and entering the IMEI, but they have no record of it being sold by them.
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Click to collapse
Like I said, try flashing a carrier branded firmware like O2U, it cannot default to German if that CSC is not included
Flash using CSC and not HOME_CSC
Sim lock is on its own secure enclave chip, so if this was truly Sim unlocked then it isn't even possible to "relock". Either was unlocked in an unreputable way, or is IMEI blocked as mentioned before.
So I just got time to re-visit this project. I flashed O2U firmware, and it defaulted to English and shows the corresponding CSC. The phone is still locked, and I checked a bunch of IMEI blacklist checkers and each one comes back clean. At this point I accept that the phone is actually locked by a carrier, so I need to instead figure out how to get it unlocked, and to do that I need to figure out what carrier it's locked to. Like I said earlier, I tried entering the IMEI into Deutsche Telekom's unlocking page, and they have no record of them having locked that phone. So how would I go about figuring out what carrier it's locked to? If that information is on its own secure enclave chip, is there any way to read it?
Afaik german providers are forbidden by law to simlock phones for several years already. Problem must be somewhere else.
Try entering the PUK of any SIM if that's what's requested. It should be on the full size SIM, else contact your mobile network operator.
So i have recently bought a phone through a "Rent to Buy" business and have owned the phone for almost 4 months. I can't seem to get the "OEM unlock" to even show up in developer options and done the trick with the date but shouldn't be the issue since i owned it for so long. I can only think there must be something installed before purchasing as customer that would stop this feature. I do know there is something with Knox if the bill wasn't payed it can be remotely shutdown from the business of purchase until unlocked with provided Pin. I just wanna change over to Germany firmware as i have with my previous phone's in the past. So any information would be much appreciated !
Device details.
Samsung Galaxy S20+ SM-G985F unlocked
international dual Sim
Exynos990
CSC code : XSA AUSTRALIA
G985FXXU5BTJ3
Don't wait for an answer here because I asked a few questions too, and no one answered them because those people are ignoring us!!!!
Aussiegeek420 said:
So i have recently bought a phone through a "Rent to Buy" business and have owned the phone for almost 4 months. I can't seem to get the "OEM unlock" to even show up in developer options and done the trick with the date but shouldn't be the issue since i owned it for so long. I can only think there must be something installed before purchasing as customer that would stop this feature. I do know there is something with Knox if the bill wasn't payed it can be remotely shutdown from the business of purchase until unlocked with provided Pin. I just wanna change over to Germany firmware as i have with my previous phone's in the past. So any information would be much appreciated !
Device details.
Samsung Galaxy S20+ SM-G985F unlocked
international dual Sim
Exynos990
CSC code : XSA AUSTRALIA
G985FXXU5BTJ3
Click to expand...
Click to collapse
I think you just need to flash a compatible firmware of your preference through odin
Yeah oem unlock is only needed for flashing custom software such as a custom recovery. You should be fine with flashing the DBT firmware on your phone through odin, just make sure to select "CSC" and not "HOME_CSC".
I've purchased a Verizon unlocked Galaxy s21 FE and am trying to use it on Mint Mobile. It connects for about 5 minutes but then 5G and reception go to 0 and a message saying "sorry, your device can't be activated on another carrier's network right now. For help, contact Verizon." pops up. I believe I could solve the issue by changing the CSC region code but don't want to trip KNOX. These are things I tried:
Phone Dialer */# commands did not work to change CSC or even show IMEI. Might be Verizon locked or Android 12 locked.
Flashing XAA region firmware did not help the issue even though it cleared all verizon bloatware and splash screen.
Flashing another carrier's (Tmobile) firmware and accidentally updated my bootloader to Binary 3 .
I believe that a potential fix is to flash android 11 from Verizon and maybe the phone dialer commands will work to change CSC.
Anyway, this has been a real headache and I just want to use my phone like normal on my selected carrier. Be careful with phones that have VZW region codes!!!
EDIT: I have the SM-G990U Snapdragon US model of the Galaxy S21 FE. Android 12 and 4.1 UI.
EDIT 2: The OEM Unlock Option does not exist on my phone even after becoming a developer.
You ever able to get this working?
Hello all. I had the WI-FI toggle issue where the Wi-fi simply would not turn on. All measures were taken and finally a local Samsung authorized repair agent had to replace the motherboard which did fix that issue. But I have the model listed in the thread title but the repair shop flashed the 990U firmware on the phone upon return home. I should have realized a red flag when the repairman asked me which carrier I had because they were having an issue with the firmware taking hold. When I got it home it had firmware from November 2021 and it would not update any further.
Well I took it back and then they actually got the 990U1 part right but this time it had the wrong CSC version on it (Tracfone) XAG when I mentioned that mine was carrier unlocked upon purchase so I would want XAA. The agent said Samsung only provided them with the one they put on it???
Now there are differences between the CSC versions. When the software is released being one I have read. My current carrier is LycaMobile so would not a firmware version of XAA be ideal as that is what was provided when I originally purchased the phone and what I had requested or possibly Tmobile as that is whose towers my current carrier will use. Doesn't it also matter as possible future ESIM support and band support could be different depending on the firmware correct??
SAMMYFANNY15 said:
Hello all. I had the WI-FI toggle issue where the Wi-fi simply would not turn on. All measures were taken and finally a local Samsung authorized repair agent had to replace the motherboard which did fix that issue. But I have the model listed in the thread title but the repair shop flashed the 990U firmware on the phone upon return home. I should have realized a red flag when the repairman asked me which carrier I had because they were having an issue with the firmware taking hold. When I got it home it had firmware from November 2021 and it would not update any further.
Well I took it back and then they actually got the 990U1 part right but this time it had the wrong CSC version on it (Tracfone) XAG when I mentioned that mine was carrier unlocked upon purchase so I would want XAA. The agent said Samsung only provided them with the one they put on it???
Now there are differences between the CSC versions. When the software is released being one I have read. My current carrier is LycaMobile so would not a firmware version of XAA be ideal as that is what was provided when I originally purchased the phone and what I had requested or possibly Tmobile as that is whose towers my current carrier will use. Doesn't it also matter as possible future ESIM support and band support could be different depending on the firmware correct??
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To change csc samfw is a free tool which allow you to change it for free
I recommend to remove sim card first .
I think s21 should support esim . I have s21 fe G990U2 and it's was locked on t-mobile . I took it to the repair shop they unlock it and after the repair I flash G990U3 on it and now my phone has 2 imei and I can use 2 physical Sims on it .
jahanzaiblohani said:
To change csc samfw is a free tool which allow you to change it for free
I recommend to remove sim card first .
I think s21 should support esim . I have s21 fe G990U2 and it's was locked on t-mobile . I took it to the repair shop they unlock it and after the repair I flash G990U3 on it and now my phone has 2 imei and I can use 2 physical Sims on it .
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I also have the S21 FE G990U2 (MetroPCS variant). Did the OEM unlock option appear in developer options after you flashed it? I would want to un-brand my FE after I unlock it to (CSC XAA?). I would be using Mint as my carrier (T-Mobile).
No there is no oem unlock option in the developer options. It dose not support esim too . Both physical Sims are working .