I'm now SIM locked after flashing a modem and can't figure out how to reverse it. I have the international model and it was never SIM locked before (a week after available). I flashed RR and couldn't get it read my SIM card so I flashed a modem. Didn't work so I restored a backup (strangely only gives system and data option) and now it shows optimizing apps every boot and says I am SIM locked. Any ideas?
I have this problem also its asking for PUK ive tried 2 different sims with there codes not working
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Hi,
I have a Samsung Galaxy S3 GT-I9300 locked to T-Mobile on Android 4.3 (baseband: I9300XXUGNA8) meaning it has changed the EFS parition to v2. The phone has been rooted as well. Is there any solution to remove the SIM lock? I have tried reflashing with older versions but the systems wouldn't boot up. I read that it can brick my phone completely. I tried using Vooodo unlocker and GalaxSim but error comes up, undefined. I tried EVERY SINGLE METHOD by using the codes: *#7465625# or *#197328640# but I either get Not registered on network message or some other error. In case of #0011# I can't pass the step 4 (when you type in 1 and the service should appear). The IMEI is fine, everything is fine as long as I'm on T-Mobile sim card (the signal works perfectly). I put any other foreign SIM and it doesn't ask me for the unlock code. Do you know what's the reason? I have bought an unlock code but I can't even use because any other method wouldn't work. Is there anything at all I could do? I'd really appreciate your help.
Regards,
- kali92uk
kali92uk said:
Hi,
I have a Samsung Galaxy S3 GT-I9300 locked to T-Mobile on Android 4.3 (baseband: I9300XXUGNA8) meaning it has changed the EFS parition to v2. The phone has been rooted as well. Is there any solution to remove the SIM lock? I have tried reflashing with older versions but the systems wouldn't boot up. I read that it can brick my phone completely. I tried using Vooodo unlocker and GalaxSim but error comes up, undefined. I tried EVERY SINGLE METHOD by using the codes: *#7465625# or *#197328640# but I either get Not registered on network message or some other error. In case of #0011# I can't pass the step 4 (when you type in 1 and the service should appear). The IMEI is fine, everything is fine as long as I'm on T-Mobile sim card (the signal works perfectly). I put any other foreign SIM and it doesn't ask me for the unlock code. Do you know what's the reason? I have bought an unlock code but I can't even use because any other method wouldn't work. Is there anything at all I could do? I'd really appreciate your help.
Regards,
- kali92uk
Click to expand...
Click to collapse
Try to flash an unbranded version, like this here: http://www.sammobile.com/firmwares/3/?download=28378
And than try it again with your code.
Tkkg1994 said:
Try to flash an unbranded version, like this here: http://www.sammobile.com/firmwares/3/?download=28378
And than try it again with your code.
Click to expand...
Click to collapse
This particular firmware fails to flash it through Odin. I assume it's designated for GT-I9305, not I9300 ... I have tried the unbranded versions for my model anyway and I usually end up in the bootloop. Any other solution? Thx
Factory reset after Odin flash.
I bought a used galaxy s3 that seems fine except that i can't get it to work with my sim card. I always get the searching & not registered on network when trying to dial. The sim card works fine on other phones. the phone is running android 4.3... Any idea of what could be the problem and how to fixx it?
Are you sure that you phone isn't sim locked?
If it were sim locked you would get a request for the unlocking code at boot. Most likely the phone has been tampered or broken, either wrong modem or efs folder corrupt.
Search and read for the available fixes.
Hi, i have some problems with No Sim Card detected on Samsung Galaxy S III I9300 from T-Mobile (Austrian)
Firstly i unlocked the phone at the shop and was really unlocked on all sim cards but than i did a factory reset and the phone no longer detects sim card from other carriers, it only detects sim card from T-Mobile, It dosen't even shows the menu when you turn on the phone for network unlock.
I tryed using those secret codes to show the network unlock menu but they didn't work since the phone was updated to 4.3 firmware.
So i followed this guide on androible downgrade-galaxy-s3-i9300-android-4-3-android-4-1-2-jelly-bean-firmware
To downgrade to 4.1.2 firmware along with provided modem file. The secret codes now do show menu's but when i click on UMTS RF NV it says it's not supported.
Also instead of downgrading to T-Mobile 4.1.2 Firmware i downgraded it to Orange 4.1.2 Firmware hope that dosen't effects it in anyways? Phone otherwise works just fine IMEI Number shows OK.
I tryed 2 different SIM cards from orange none of them worked, it only detects SIM from T-Mobile.
To recap it all agean: I wish to unlock this phone so i can use different SIM card's but the phone is on NO Sim card, emergency calls only but when i insert T-Mobile Sim it works, Also there is no Network Unlock Menu shown durning turn on or reset since i already Unlocked the phone once with a code. Does anyone has any clue how to fix this or unlock it without rooting the phone.
I flashed my Note 8 when I first got it (before I had the unlock code). I flashed it to XAA/U1. Well, I got the unlock code a few days later and when I popped in a foreign SIM it simply says "Invalid SIM card inserted" "This SIM card is not supported" with no prompt to enter SIM unlock. At the time this was not a huge deal I kept the unlock code and have been using it since. Today I swapped carriers. Now it matters.
Phone is showing model # SM-N950U1.
Bootloader shows Carrier: ATT
Baseband is BRA5
I flashed N950USQU3CRC2_N950UOYN3CRC2_ATT
It still doesn't have the carrier bloat or prompt me to enter a SIM unlock.
Thoughts?
ls3mach said:
I flashed my Note 8 when I first got it (before I had the unlock code). I flashed it to XAA/U1. Well, I got the unlock code a few days later and when I popped in a foreign SIM it simply says "Invalid SIM card inserted" "This SIM card is not supported" with no prompt to enter SIM unlock. At the time this was not a huge deal I kept the unlock code and have been using it since. Today I swapped carriers. Now it matters.
Phone is showing model # SM-N950U1.
Bootloader shows Carrier: ATT
Baseband is BRA5
I flashed N950USQU3CRC2_N950UOYN3CRC2_ATT
It still doesn't have the carrier bloat or prompt me to enter a SIM unlock.
Thoughts?
Click to expand...
Click to collapse
Switching carrier guide to change CSC code to ATT...then flash ATT firmware
Let me give everyone a heads up who may be an idiot and do this.
I had to downgrade from Oreo to BRA8. I had to do the carrier switch and change the CSC file. I then had to flash all AT&T bloat. Then pop my SIM in. Use my unlock code. Then reflash to XAA.
Thanks BlueFox helped me through the whole ordeal. What an effin nightmare. All this was in the name of gaming the carriers for "free" phones.
I am still trying to get my XAA flash going, but this was a solid 5 hours of effort on my part. Shame I will be updating to the S9+ within the next month or so.
Phone displays "Network Locked SIM Card" Inserted after flashing a stock firmware
I recently uninstalled Magisk, and was able to only boot into download mode after. So, I downloaded a stock firmware for my s9+ 965f and flashed it through odin (using AP,BL, CP, CSC(didnt select HOME CSC). But after rebooting, the phone displays "Invalid SIM. Network Locked SIM Card Inserted".
It asks for PUK code to unlock the phone and the cellular service alone is not working now. My phone is already region unlocked and I have been using it for the past 8 months. Has anybody got this issue and any suggestions on how to solve it?
Previous OS: soldierx rom for 965f v12 on Oreo
What I did,
i) uninstall all modules in magisk,
ii) uninstall magisk,
iii) phone auto-reboot
iv) Now phone stuck in download mode. Cannot boot it
v) downloaded stock firmware G965FXXU2BRGA
vi) flashed through Odin(AP,BL,CP,CSC)
vii) Phone completely formatted and boots up.
"Error:Invalid SIM card inserted. Network Locked SIM card detected "
I am now being asked for PUK code or cellular service wont work
You need to contact your carrier for PUK code, its protective measure against too many wrong PIN attempts on specific SIM. Can't fix that with any flashing.
Uksav said:
You need to contact your carrier for PUK code, its protective measure against too many wrong PIN attempts on specific SIM. Can't fix that with any flashing.
Click to expand...
Click to collapse
This is where the problem is. You put any sim card in that phone, you get the same error. The sim card works fine if I put in any other phone. I am not sure but unistalling Magisk has caused "SIM Card Read Error" in my S9+. I even upgraded to Pie from Oreo and flashed 3 different stock firmwares but the sim card error exists.
@topjohnwu
I would appreciate if you can help me on this. Not sure how to fix the issue
Looking up the error message itself points to some sort of network/carrier lock. If I am reading regional lock and carrier lock definitions correctly the two are not the same..
Did you have the phone network unlocked or was it network unlocked when you had root installed? If the device was network unlocked when it was rooted and you flashed back to stock (which removes root) this might explain what is going on...
scottusa2008 said:
Looking up the error message itself points to some sort of network/carrier lock. If I am reading regional lock and carrier lock definitions correctly the two are not the same..
Did you have the phone network unlocked or was it network unlocked when you had root installed? If the device was network unlocked when it was rooted and you flashed back to stock (which removes root) this might explain what is going on...
Click to expand...
Click to collapse
This is an unlocked phone. I had magisk installed and when trying to uninstall it to upgrade to latest magisk, the device wont boot except download mode. So, I downloaded stock firmware and flashed it. Once I boot up with the new stock firmware, I get this error
There is some sort of lock on the phone, which is why your being asked for the code.
I think you should definetly try was what was suggested above.. trying to contact the carrier and see if they can give you the PUK code. If I recall correctly you get a few tries to enter it correctly before it won't let you anymore (and it might lock the phone up good or damage the sim)
I'm having a similar issue on a Verizon A50. Any progress?
Gowtham34 said:
This is an unlocked phone. I had magisk installed and when trying to uninstall it to upgrade to latest magisk, the device wont boot except download mode. So, I downloaded stock firmware and flashed it. Once I boot up with the new stock firmware, I get this error
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Click to collapse
depending on what method was used to unlock it, its likely no longer unlocked. some sellers of unlock codes neglect to mention that part. im betting its locked again