Develop Bugs

Foreign SIM doesn't prompt for unlock code -- how to unlock?

I have a SaskTel Samsung Galaxy S3 (SGH-I747M, baseband version I747MVLLE8) that is locked, and I want to unlock it. But when I insert a foreign SIM (from AT&T) I get no prompt for an unlock code. Instead it just says "No SIM card. Emergency calls only." I've contacted several of the online unlock code suppliers and they say without this prompt I can't unlock the phone. I've also tried to enter variations of the *7465625* code, but they do nothing at all. SaskTel says they don't provide unlock code. This despite the fact that I purchased the phone outright, and have no contract with them. Am I totally hooped, or is there some way I can get this phone unlocked?

ddice said:
I have a SaskTel Samsung Galaxy S3 (SGH-I747M, baseband version I747MVLLE8) that is locked, and I want to unlock it. But when I insert a foreign SIM (from AT&T) I get no prompt for an unlock code. Instead it just says "No SIM card. Emergency calls only." I've contacted several of the online unlock code suppliers and they say without this prompt I can't unlock the phone. I've also tried to enter variations of the *7465625* code, but they do nothing at all. SaskTel says they don't provide unlock code. This despite the fact that I purchased the phone outright, and have no contract with them. Am I totally hooped, or is there some way I can get this phone unlocked?
Click to expand...
Click to collapse
try another SIM, maybe the one you're using is borked.

Try this
#7465625*638*# (Insert Network Lock Keycode)
Sent from my SGH-I747M using xda app-developers app

cue_32 said:
Try this
#7465625*638*# (Insert Network Lock Keycode)
Sent from my SGH-I747M using xda app-developers app
Click to expand...
Click to collapse
I've already tried that, the phone doesn't respond to this keystroke sequence.

dLo GSR said:
try another SIM, maybe the one you're using is borked.
Click to expand...
Click to collapse
Possible, but I doubt it, since it works just fine in another phone. In any case I don't have another one to try.

Misread

#7465625*638*UNLOCKCODE#
I noticed in an earlier post, the place of the unlock code was after the #, it should be before. On the right track though. Probably just a typo.
unless you already tried that.

lamsik said:
#7465625*638*UNLOCKCODE#
I noticed in an earlier post, the place of the unlock code was after the #, it should be before. On the right track though. Probably just a typo.
unless you already tried that.
Click to expand...
Click to collapse
That and probably every variation of it I can think of! I am wondering though, is this code internal only to the phone, or does it go to the cellular network? When I do type it, it does nothing, though if I send it I get an "Invalid USSD" message returned from the network.

lamsik said:
#7465625*638*UNLOCKCODE#
I noticed in an earlier post, the place of the unlock code was after the #, it should be before. On the right track though. Probably just a typo.
unless you already tried that.
Click to expand...
Click to collapse
this code doesn't work on the LTE variants of the SGS3. most of the multi-stage codes (####*###) don't work, you just end up with an error.

Correct as stated. Additionally, if you have a foreign micro sim, and you are not on a stock ROM, the unlock screen prompt will not show. I was running AOKP, and could not get the prompt to show, so I flashed back to stock, unlocked phone, then flashed back to AOKP, bc TW sucks!
Sent from my SAMSUNG-SGH-I747 using xda premium

Gerbowski said:
Correct as stated. Additionally, if you have a foreign micro sim, and you are not on a stock ROM, the unlock screen prompt will not show. I was running AOKP, and could not get the prompt to show, so I flashed back to stock, unlocked phone, then flashed back to AOKP, bc TW sucks!
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
This is what I was starting to suspect. Can you refer me to a good, really clear step by step procedure to do this? I've never done this with a phone, and since I live in a small town, I doubt I can find anyone to help me here. So a step by step would be nice. Thanks.

ddice said:
This is what I was starting to suspect. Can you refer me to a good, really clear step by step procedure to do this? I've never done this with a phone, and since I live in a small town, I doubt I can find anyone to help me here. So a step by step would be nice. Thanks.
Click to expand...
Click to collapse
are you on a stock ROM?

i have a i747M and unlocked it with the at&t micro sim, so i know it works,
did u cut ur at&t sim down to size ? maybe u did it wrong and it wont recognize, or ur sim slot is ****ed up ....
ur best bet right now is to try another micro sim

Ok, I've now got my phone rooted. Can someone suggest how I can get the ROM set so that it will allow me to enter the unlock code when I insert a foreign SIM.

There's a 3rd potential method that hasn't been mentioned on here that we see working for most Samsung handsets. In fact, for some Samsung handsets (usually older ones) it is the only unlocking method that will work.
It is:
1. Turn on the phone with a non accepted or accepted SIM card inserted
2. Type #0111*CODE# replacing CODE with your network unlock code
However, if your service provider lock is active, then you'll need to use the code #0133*CODE# instead.
All unlocking methods (once you have the unlock code) are available here: http://www.mobileunlocked.co.uk/samsung-instructions.asp
Hope that helps.

Did you manage to unlock?
I'm facing the exact same issue. My S3 doesn't show the network unlock prompt when I insert a foreign SIM. Mine is locked to AT&T. It's also SGH-I747 model

You could try and unlock your phone as per this thread:
http://forum.xda-developers.com/showthread.php?t=2033225
Then try the SIM card after the phone is unlocked.
Oh, I believe this only works on Stock ROMS.

Tybalt said:
You could try and unlock your phone as per this thread:
http://forum.xda-developers.com/showthread.php?t=2033225
Then try the SIM card after the phone is unlocked.
Oh, I believe this only works on Stock ROMS.
Click to expand...
Click to collapse
Follow the link Tybalt quoted, you will unlock your phone and the sim won't ask for an unlock code because well, it's unlocked.... Follow the instructions, you need to be on JB 4.11 for this to work, some have had success on custom roms but not many....you don't need to root to do this and make sure when you see the success code you have 40 at the end not 30... i did this a couple times... 30 I think basically means you have locked it again ... and in the instructions when it says wait 30 or 60 seconds... you really do have to wait.. don't be impatient....it's a huge thread with many many successes.....

Samsung Galaxy S3
I have the same issue but I have a sgh-i747 Samsung galaxy S3 i brought it to koodo and was told it was a compatible phone with the company when unlocked. The problem/question i have is When i insert my new simcard the screen will not display any prompt to input a unlock code. It just says emergency calls only or unregistered sim. I inserted my sim card into another s3 same model, software versions, different provider, and the phone asked for the unlock code right when powered on. So i tried and flashed a new firmware but its doing the same thing.
I called koodo and they gave me instructions to create a new apn of Koodo SP it did not make my phone prompt me for an unlock code.
When i send an email to any website about unlocking my phone they advice me not to purchase there product if my phones not prompting me for a unlock code that will it more then likely not work.
I've seen methods online of using these to input an unlock code "#0111*UNLOCKCODE#" or "#7465625*638*UNLOCKCODE#" but when i tell the unlock website this information this still tell me not to purchase there product and i mean many numerous websites. I do not want to buy an unlock code only to try to input it with these methods and have it not work. Which i highly dought it would because the normal 7465625 command doesnt work either.
I also tried this factory unlock and it did nothing
PLEASE HELP!?!?

mobileunlocked said:
There's a 3rd potential method that hasn't been mentioned on here that we see working for most Samsung handsets. In fact, for some Samsung handsets (usually older ones) it is the only unlocking method that will work.
It is:
1. Turn on the phone with a non accepted or accepted SIM card inserted
2. Type #0111*CODE# replacing CODE with your network unlock code[/URL]
Hope that helps.
Click to expand...
Click to collapse
Thank you so much for this!
Whenever I typed any variation of the #7465625 code I would get the "emergency calls only" message. #0111*CODE# did the trick!
The provider didn't even know this, the best they could come up with after numerous calls to their hotline is that the phone was broken and/or that the SIM card was badly inserted, thus I should mail them the phone to the other side of the country for unlocking. Would they even have known how to do it over there?
My grandma says thanks!

Unlock t889 issue - SOLVED

SOLVED:::::::::: Thanks to Pirobo_Colmbino
I recently was issued an official unlock code for my t889 from tmo. I tried to unlock the device using an ATT sim and got the "network unlock unsuccessful" message. Apparently, I'm a dunce and didn't read AND follow the instructions properly and entered the wrong code more than once. Now I am told that my device is PERMANENTLY LOCKED and cannot be unlocked. Is this correct? Is there a way to fix it? HELLLP

guardm said:
I recently was issued an official unlock code for my t889 from tmo. I tried to unlock the device using an ATT sim and got the "network unlock unsuccessful" message. Apparently, I'm a dunce and didn't read AND follow the instructions properly and entered the wrong code more than once. Now I am told that my device is PERMANENTLY LOCKED and cannot be unlocked. Is this correct? Is there a way to fix it? HELLLP
Click to expand...
Click to collapse
Hi, im not sure if this is gonna help, but the way I unlock mine was with the help of a simple youtube search. Im new her so i cant post a link.
Steps: dial *#197328640#
step 1: umts
step 2: debug screen
step 3: phone control
step 4 network lock
step 5: perso sha256 off ( wait 30 seconds than hit the menu key and hit back)
step 6: nw lock nv data initialliz (wait about 1 minute and exit.
reboot and that should be it.
Try that out and if it does not work "meaning you dont see all of the options" all you have to do is downgrade to an older version of Stock " yes you will have to root again but it gets the job done.
If it helps dont forget to hit thanks.

Pirobo_Colombino said:
Hi, im not sure if this is gonna help, but the way I unlock mine was with the help of a simple youtube search. Im new her so i cant post a link.
Steps: dial *#197328640#
step 1: umts
step 2: debug screen
step 3: phone control
step 4 network lock
step 5: perso sha256 off ( wait 30 seconds than hit the menu key and hit back)
step 6: nw lock nv data initialliz (wait about 1 minute and exit.
reboot and that should be it.
Try that out and if it does not work "meaning you dont see all of the options" all you have to do is downgrade to an older version of Stock " yes you will have to root again but it gets the job done.
If it helps dont forget to hit thanks.
Click to expand...
Click to collapse
Thanks for your reply. I tried this before and all the worked until it comes to step 5. When I go back, the item "nw lock nv initialliz" (in your step 6), isn't there to select. Perhaps downgrading is the answer?
The part I don't seem to understand is that TMO says because I entered the wrong code multiple times, I lost the ability to unlock. Does this method overwrite or fix the permanent lock they spoke of?

guardm said:
Thanks for your reply. I tried this before and all the worked until it comes to step 5. When I go back, the item "nw lock nv initialliz" (in your step 6), isn't there to select. Perhaps downgrading is the answer?
The part I don't seem to understand is that TMO says because I entered the wrong code multiple times, I lost the ability to unlock. Does this method overwrite or fix the permanent lock they spoke of?
Click to expand...
Click to collapse
Yeah if u dont see it you must downgrade.
and as far as the overwrite im not sure. sorry

Pirobo_Colombino said:
Yeah if u dont see it you must downgrade.
and as far as the overwrite im not sure. sorry
Click to expand...
Click to collapse
Thanks I will try it. Just gotta go find the downgrade rom.

Pirobo_Colombino said:
Yeah if u dont see it you must downgrade.
and as far as the overwrite im not sure. sorry
Click to expand...
Click to collapse
You, sir are correct. I was able to downgrade via Odin, but I lost some functions (which didn't matter since it was only temporary). I performed the steps you provided and tested with an ATT sim. It worked. Then I updated to current stock ROM and rooted. Tested again with ATT sim and my device is still unlocked. Thanks for your help. I hope anyone else who runs into this issue, can find this post and learn like I did.

guardm said:
You, sir are correct. I was able to downgrade via Odin, but I lost some functions (which didn't matter since it was only temporary). I performed the steps you provided and tested with an ATT sim. It worked. Then I updated to current stock ROM and rooted. Tested again with ATT sim and my device is still unlocked. Thanks for your help. I hope anyone else who runs into this issue, can find this post and learn like I did.
Click to expand...
Click to collapse
What Version were you on when you could not unlock it. And what version did you flash?

guardm said:
You, sir are correct. I was able to downgrade via Odin, but I lost some functions (which didn't matter since it was only temporary). I performed the steps you provided and tested with an ATT sim. It worked. Then I updated to current stock ROM and rooted. Tested again with ATT sim and my device is still unlocked. Thanks for your help. I hope anyone else who runs into this issue, can find this post and learn like I did.
Click to expand...
Click to collapse
Im glad i could help. :good:

gedster314 said:
What Version were you on when you could not unlock it. And what version did you flash?
Click to expand...
Click to collapse
I'm not so sure it had much to do with the version, although I am no expert dev. Mind you, this happened in a short period of time.
TIMELINE:
I was on The stock (shipped) rom when I first bought my GN2. I got it new and broke the seal on the box. Upon opening and starting the device, I got an OTA update (don't remember the build but not the LL4 ota). I started doing some reading on XDA, since like most, I like tinkering and tweaking. Not long after that (Mid Jan 2013) I got the OTA from TMO that had "minor fixes and security changes". This is when I read somewhere on XDA that it is not recommended that we accept the OTA update. But it was too late; I had already done it. I came across the unlock instructions posted earlier in this thread but I couldn't get pass all the steps. A few days later I rooted via ROOT66_TMO_UVALL4 rom, which gave me access to SuperUser. [I have this ZIP saved if anyone wants it and wants to show me how share it.] Then I got an official unlock code from TMO.
I followed these instructions that TMO sent me with the unlock code
Thank you for taking the time to contact T-Mobile. Below you will see the Instructions for unlocking your Samsung device.
Please be advised a non T-Mobile SIM card MUST be used to unlock this device.
1. Insert a NON T-Mobile SIM & turn Device on
2. The Device will automatically prompt you to enter code into an empty field.
3. Click/Tap in the empty field above the "Unlock & Dismiss" options (this will display a key pad on the screen).
4. Using the key pad input the Unlock Code provided by T-Mobile.
5. Press the Back button to remove the keyboard from screen.
6. Click/Tap the "Unlock" option; handset should display "Network Unlock Successful".
Please note that if you are unlocking a flip device please use steps 1, 2, 3 and 6.
Click to expand...
Click to collapse
In my haste, I didn't follow the instruction EXACTLY as written. Somehow I managed to enter the unlock code while using my TMO sim and not the "NON TMO sim". When I did this, I got the message in step 6. I thought I was good from here. I tried an ATT sim a few days later to verify but it asked me again for the sim unlock code but the operation was unsuccessful. I tried entering the donor phone's screen unlock code a few times as well as zeros and 1234 and again failed. I tried again with another donor phone with the same result. TMO sent me a second unlock code which also failed. I did tell them that I had done the OTA update and the rep told me it shouldn't matter. I did not tell them I was rooted stock though. The rep told me that due to entering the wrong code multiple times, the device went into "security lockout" and could not be unlocked. I read into several threads and posts and could not find the answer, Thus my original post. I down graded my Rom to T889UVALJ1, successfully performed the unlock procedure posted above (NOT TMO official), and re-installed the ROOT66 rom. Everything is now working perfectly. I put in the ATT sim and it pops right up as ATT.
The real question now is, does the OTA issued by TMO block the unlock exploit and is that what they refer to when they mention "security features"?
Thank for Solving this issue goes to user Pirobo_Colombino see post 2

I encountered the same problem couple weeks ago. The problem is not caused by the TMO firmware update but rather the fact that you tried to unlock the phone using the hack you found on the internet. Per instruction on the free unlock hack online, you selected "PERSO SHA256 OFF", this step is what prevented the phone from being successfully unlocked with TMo unlock code. In order for the TMO unlock code to work, you have to select "PERSO SHA256 ON", then follow the instruction steps to unlock using TMO code. That is what I did and it worked for me. Hope this helps anyone who will run into this problem in the future. Cheers :good:

akdnj88 said:
I encountered the same problem couple weeks ago. The problem is not caused by the TMO firmware update but rather the fact that you tried to unlock the phone using the hack you found on the internet. Per instruction on the free unlock hack online, you selected "PERSO SHA256 OFF", this step is what prevented the phone from being successfully unlocked with TMo unlock code. In order for the TMO unlock code to work, you have to select "PERSO SHA256 ON", then follow the instruction steps to unlock using TMO code. That is what I did and it worked for me. Hope this helps anyone who will run into this problem in the future. Cheers :good:
Click to expand...
Click to collapse
Interesting....... This is the first I've heard of this. Not to say this info is not out there; I just never came across it. I do hope that this reaches the poster of those links (there are quite a few) as a cautionary note. Perhaps someone will post a how-to compiled with all these tidbits included.

After the sim unlock, sim card in HK still also can use it?

Yat_Fung said:
After the sim unlock, sim card in HK still also can use it?
Click to expand...
Click to collapse
I cannot say it will work with HK sim since I have NO experience with that card or even overseas. However, I can say that ATT&T sim works every time I put it in the phone. Have you ever used a HK sim in another phone? If you did and it worked, I don't see why it wouldn't work in this one.

Provide link?
Pirobo_Colombino said:
Hi, im not sure if this is gonna help, but the way I unlock mine was with the help of a simple youtube search. Im new her so i cant post a link.
Steps: dial *#197328640#
step 1: umts
step 2: debug screen
step 3: phone control
step 4 network lock
step 5: perso sha256 off ( wait 30 seconds than hit the menu key and hit back)
step 6: nw lock nv data initialliz (wait about 1 minute and exit.
reboot and that should be it.
Try that out and if it does not work "meaning you dont see all of the options" all you have to do is downgrade to an older version of Stock " yes you will have to root again but it gets the job done.
If it helps dont forget to hit thanks.
Click to expand...
Click to collapse
Could you provide the links to old versions of stock because Ive been having some trouble rooting back to a baseband before vall4

Spartan2x7 said:
Could you provide the links to old versions of stock because Ive been having some trouble rooting back to a baseband before vall4
Click to expand...
Click to collapse
A quick forums search shows this
http://forum.xda-developers.com/showthread.php?t=2102380
You should find what you need here. If it helps hit the thanks button.

akdnj88 said:
I encountered the same problem couple weeks ago. The problem is not caused by the TMO firmware update but rather the fact that you tried to unlock the phone using the hack you found on the internet. Per instruction on the free unlock hack online, you selected "PERSO SHA256 OFF", this step is what prevented the phone from being successfully unlocked with TMo unlock code. In order for the TMO unlock code to work, you have to select "PERSO SHA256 ON", then follow the instruction steps to unlock using TMO code. That is what I did and it worked for me. Hope this helps anyone who will run into this problem in the future. Cheers :good:
Click to expand...
Click to collapse
Thank you so much!! Tmobile sent me the code and I was having problems unlocking my note ll till I read this info.

Samsung Tmobile
handrade773 said:
Thank you so much!! Tmobile sent me the code and I was having problems unlocking my note ll till I read this info.
Click to expand...
Click to collapse
Need help Bad.
Have a tmobile sgh-t889. Tmobile sent me an network unlock pin and entered it. Says network unlock successfull. but still no signal. restarted the device and it again asked for a network pin. did the step again and stil the same..
What could be wrong? BTW its a 4.1.1.
Pls help.

junedar said:
Need help Bad.
Have a tmobile sgh-t889. Tmobile sent me an network unlock pin and entered it. Says network unlock successfull. but still no signal. restarted the device and it again asked for a network pin. did the step again and stil the same..
What could be wrong? BTW its a 4.1.1.
Pls help.
Click to expand...
Click to collapse
Latest OTA is 4.1.2
I'm not sure how you are trying to do your unlock. In order to use the unlock method detailed in post #2, I needed to downgrade my firmware. The method in post 2 WILL NOT work after the OTA update.
If you are using the instructions from your carrier, follow the instructions they emailed you EXACTLY. If you have issues with the carrier instructions, contact them; It's up to them to give you proper tech support on THEIR product.
As I understand, the "hack" method is for mostly intended those who have modded/altered/rooted/other-than-stock devices. Whichever method you use, be aware, YOU RUN THE RISK OF BRICKING YOUR DEVICE. That being said, research your steps BEFORE you end up with a dead device.
I AM NOT a developer nor claim to be an expert at any of these methods. However I have been modding my devices for years by reading and researching XDA. I have had success and failures and so will you. The best advice I can offer is to continue reading the posts CAREFULLY and be patient.
I hope this helps

guardm said:
Latest OTA is 4.1.2
I'm not sure how you are trying to do your unlock. In order to use the unlock method detailed in post #2, I needed to downgrade my firmware. The method in post 2 WILL NOT work after the OTA update.
If you are using the instructions from your carrier, follow the instructions they emailed you EXACTLY. If you have issues with the carrier instructions, contact them; It's up to them to give you proper tech support on THEIR product.
As I understand, the "hack" method is for mostly intended those who have modded/altered/rooted/other-than-stock devices. Whichever method you use, be aware, YOU RUN THE RISK OF BRICKING YOUR DEVICE. That being said, research your steps BEFORE you end up with a dead device.
I AM NOT a developer nor claim to be an expert at any of these methods. However I have been modding my devices for years by reading and researching XDA. I have had success and failures and so will you. The best advice I can offer is to continue reading the posts CAREFULLY and be patient.
I hope this helps
Click to expand...
Click to collapse
Yep I did in detail what has been said in post #2. ( By default my device is 4.1.1. )
When it didnt worked, I asked tmobile for the network pin. I also followed their instruction thoroughly, after i entered the pin they gave, it gave the message network unlock successfull. I noticed that there still was no signal so i restarted my device. However it still keep asking me for a network pin. When I asked them about this, they just said that they dont really know why.
I also did a factory reset.
Wonder what could be the issue. Any thoughts?

junedar said:
Yep I did in detail what has been said in post #2. ( By default my device is 4.1.1. )
When it didnt worked, I asked tmobile for the network pin. I also followed their instruction thoroughly, after i entered the pin they gave, it gave the message network unlock successfull. I noticed that there still was no signal so i restarted my device. However it still keep asking me for a network pin. When I asked them about this, they just said that they dont really know why.
I also did a factory reset.
Wonder what could be the issue. Any thoughts?
Click to expand...
Click to collapse
I would call Tmobile again and talk to someone else. Maybe ask for tier 2 support. Many times, the first person you get is a low level customer support person that only knows what the computer screen shows them unfortunately.

[Q] AT&T provided SIM unlock code not working - KNOX issue?

I am selling my SGH-i317, but am unable to SIM unlock the phone with the unlock code that AT&T provided for the IMEI.
When pop in a T-Mobile SIM, the phone asks me for an unlock code. But it refuses to accept the code with message: "Network unlock request unsuccessful".
What could be causing this?
Here's a history of my phone:
1. I have used it with a custom ROM, so the KNOX counter is tripped.
2. I was on a rooted UCUBMK6 ROM with TWRP recovery.
3. I used Triangle Away and unrooted.
4. I then used Odin to flash back to UCALJ2 with Stock Recovery (unrooted), using this tar file: KIES_HOME_I317UCALJ2_I317ATTALJ2_215287_REV04_user_low_ship.tar.md5
5. This gave me stock recovery and stock ROM. KNOX still tripped, custom ROM counter=1
6. I then used Odin to flash the UCUCNE5-Stock-No recovery. I assumed that the stock recovery from the UCALJ2 ROM would work as a "match" (?).
7. Device now reports baseband version I317UCUCNE5, build number KOT49H.I317UCUCNE5. Kernel 3.0.31-1728680. KNOX still tripped, Custom ROM counter=1.
But the unlock is a no-go. What gives??

Have you tried the before method?
http://galaxynote2root.com/galaxy-note-2-tutorials/how-to-unlock-sim-for-free-on-gsm-galaxy-note-2/
Sent from my SGH-I317 using XDA Free mobile app

ShrekOpher said:
Have you tried the before method?
http://galaxynote2root.com/galaxy-note-2-tutorials/how-to-unlock-sim-for-free-on-gsm-galaxy-note-2/
Click to expand...
Click to collapse
No..thanks for the tip. My menu doesn't show that option, probably removed in later ROM versions. But I found this YouTube video that suggests flashing back to an older modem, then following that method, then flashing back. Worth a try...will give that a go.

This helped me unlock my device....
amfractal said:
It was probably mine. I had the same issue and I got my code from cellunlocker.net.
I was on SlimRom and it was not working. I finally went back to the official rom for one final try and it worked.
This is what I did. I'm not sure if just trying the unlock code would've worked but I did follow these steps (it's a bit weird since you don't actually change anything, maybe it forces the phone to refresh something.)
Just make sure you are on official ROM or it won't work (I tried only the code with the SlimROM and it did not work).
After unlocking I went back to SlimRom and then CM and it was always unlocked.
1. Make sure that the phone PROMPTS for the code with a NON accepted sim card and that your IMEI is correct by dialing *#06#
a. Go to the Dial pad and dial *#197328640#
b. Please click on number [1] UMTS > [1] Debugging screen > [8] Phone Control > [6] NETWORK LOCK
c. You will see 3 options
d. Please click on number [1] Perso Sha256 INFO, the screen will change slightly
e. Please hit the MENU button then when the menu pops up please carefully hit BACK to return to the previous screen
f. Next Please click on number [2] Perso Sha256 ON, the screen will change again to a one line message
g. Restart the phone on the screen by holding the power button and click RESTART
h. When the phone prompts for the unlock code simply enter the unlock code provided to you
i. Your phone is now permanently unlocked!
Click to expand...
Click to collapse
dubluv1 said:
This method worked for me.
FYI- my situation (maybe it'll help others): I bought a T-Mobile prepaid SIM card for my spare GS3 just to see if it would work. I contacted AT&T and they provided me a SIM unlock code (took about 2 days). However, it did not work! 5 days later, and they still haven't figured it out! I decided to take matters into my own hands. After many many hours of research and trying all sorts of methods I believe whats happening its that people are trying the dial pad method and setting their Perso Sha256 to "OFF". If you've done that then unlock codes will not register correctly... So get and unlock code, then set it back to ON following the steps above. Hopefully that helps others..
[Stock rooted 4.3 OTA I747 AT&T US]
Click to expand...
Click to collapse

mexigga said:
This helped me unlock my device....
Click to expand...
Click to collapse
Sweeeet. That did the trick. Thank you!!

mobidutch said:
Sweeeet. That did the trick. Thank you!!
Click to expand...
Click to collapse
Great to hear!

Need help unlocking

I need to unlock my wife's S3 and I got the unlock code from AT&T but when I try to do it, it says unsuccessful. The phone is completely stock not even rooted. Can anyone help cause AT&T is useless?

Does the imei match the imei on the phone's printed label?

Yes it does

When you insert a non-ATT sim, you get the prompt to enter the unlock code? If you do and you enter the code provided by ATT based on the phone's imei, sounds like ATT may have given you the wrong code.

audit13 said:
When you insert a non-ATT sim, you get the prompt to enter the unlock code? If you do and you enter the code provided by ATT based on the phone's imei, sounds like ATT may have given you the wrong code.
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Yes then it gives me and sim unlock unsuccessful. I am getting sick and tired of sitting on hold with them

I'm not sure if the s3 gives you a limited number of tries to unlock it but I would not attempt more than 2 attempts each day.
I assume you confirmed the imei # with ATT? Is it possible the phone is hard-locked to ATT? Did ATT give you any other codes such as unfreeze codes, PUKs, etc.?

i know you said stock , unrooted. dont you have to be on 4.1.1 to unlock? prob. are, just asking.
err on the side of kindness

What ROM is on your phone? If it is 4.1.1 or 4.1.2, you could try using the free unlock method.

I'm having the same problem here. Received a code from AT&T on Oct 26th and they're still trying to figure out why it doesn't work. Bought the locked phone at BestBuy and never touched it until I tried to use the code they gave me.

ninaviana said:
I'm having the same problem here. Received a code from AT&T on Oct 26th and they're still trying to figure out why it doesn't work. Bought the locked phone at BestBuy and never touched it until I tried to use the code they gave me.
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What ROM version is on your phone?

audit13 said:
What ROM version is on your phone?
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I have no idea what that is. The phone runs on Android 4.3 if that helps.

ninaviana said:
I have no idea what that is. The phone runs on Android 4.3 if that helps.
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If you were on 4.1.1 or 4.1.2 and the code didn't work, you could revert back to stock 4.1.1 and unlock the phone for free. Since you're on 4.3, you can only unlock the phone with an unlock code. Seems strange that the unlock code doesn't work. Did you confirm you phone imei and the imei you submitted to ATT?

audit13 said:
If you were on 4.1.1 or 4.1.2 and the code didn't work, you could revert back to stock 4.1.1 and unlock the phone for free. Since you're on 4.3, you can only unlock the phone with an unlock code. Seems strange that the unlock code doesn't work. Did you confirm you phone imei and the imei you submitted to ATT?
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Yes, I checked everything. Today I spent almost an hour on the phone with them trying to figure out the problem. They even called Samsung and they didn't know what was wrong either.

ninaviana said:
Yes, I checked everything. Today I spent almost an hour on the phone with them trying to figure out the problem. They even called Samsung and they didn't know what was wrong either.
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Is it possible that the phone has become hard-locked to ATT due to too many unsuccessful unlocking attempts?

audit13 said:
Is it possible that the phone has become hard-locked to ATT due to too many unsuccessful unlocking attempts?
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I read that the phone displays a message when that happens, and none has been presented so far... It always asks me for the network unlock code.

Problem solved
To whoever is going through the same trouble. This is not the "unlock it for free" method, for you will need to insert the unlock code
For Samsung Galaxy S3, S4 and Note 2. Device must be updated to the latest firmware.
Phone MUST prompt for the code. This is the "release method" on the phone(s).
a. Go to the Dial pad and dial *#197328640#
b. Click on number [1] UMTS > [1] Debugging screen > [8] Phone Control > [6] NETWORK LOCK
c. You will see 3 options. Click on number [1] Perso Sha256 INFO, the screen will change slightly
e. Hit the MENU button then when the menu pops up carefully hit BACK to return to the previous screen
f. Click on number [2] Perso Sha256 ON, the screen will change again to a one line message
g. Restart the phone on the screen by holding the power button and click RESTART
h. When the phone prompts for the unlock code simply enter the unlock code
END

N910P - I have MSL code but no prompt to unlock? please help

Hi All,
Please help.
Goal:
- unlock N910P for domestic US (I have MSL code from Sprint)
- do not want to root
Details:
- account and phone is paid
- Sprint gave me MSL saying it is my unlock code
- 5.1.1
- has been reset to factory and cleared cache
- I watched a few videos saying that I need to put a different carrier sim in and it will prompt for the MSL code to unlock
- I have tired 4 sim from T-Mobile and AT&T, 2 are working sim from working phone... none will prompt for code
- I tried ##3282# which get me to manual settings but I am not sure if I should mess with it
- invalid sim for T-Mobile and AT&T but works fine for Sprint
- I read that it may work with Kit Kat but I cannot downgrade without root
Thank you all in advance.
Please let us not get into the debate of carriers and GSM/CDMA. I just need help with the unlock portion. Thank you again. :highfive: