yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S 4 General] tony1208:
Called at&t wireless and told the rep I wanted my s4 unlocked and the rep gave me it... Worked fine..

I called last month and they told me no unlock code was available. Called last week and was directed to the main site and the information told me no code available. Called again today to ***** and out of no where they gave me the code within 5 min talking on the phone. Maybe I got lucky or may e att is giving them out now... I DID NOT PAY A CENT.

Sent from my I337 Galaxy S4
[AT&T Samsung Galaxy S 4 General] x00mv2r:
Cannot get to service menus on MF3 firmware

Hi Scott, my S4 is on MF3 firmware. Appreciate your advice. Thanks.
[AT&T Samsung Galaxy S 4 General] ShensMobile:
Does USB unlocking (apparently the only available solution to try next) fix the problem where peoples original SIM cards can't be detected on their phone? Secondly, what is USB unlocking exactly?

My phone is also exhibiting the unregistered SIM/Invalid SIM/Network-locked SIM problem for a SIM from the original provider. I've tried this unlock method several times but nothing's happening and now my phone's useless!
[AT&T Samsung Galaxy S 4 General] gerard0986:
Just did this on my AT&T I337 MDL S4 on SHOstock 2.1. Seemed to work just fine. Can't test if another sim card will work, but I'm not having any of the problems others have mentioned yet.
[AT&T Samsung Galaxy S 4 General] Caifan09:
This work for me too. At&t I337 Model with MDL, I succesfully unlocked the phone. Now using it fine with my carrier Telcel here in Mexico. Thanks a lot.
[AT&T Samsung Galaxy S 4 General] SUDroid:
What does PERSO SHA256 OFF do exactly? Does it pose a security risk in anyway?
[AT&T Samsung Galaxy S 4 General] scott14719:
Considering SHA256 is a method of encryption, I would say that at least on some level, it would create lesser security. The question is, is the encryption related to anything that could be used to compromise the phone or does turning it off only allow internal write operations. I am inclined to believe that it simply opens up the the NV memory for a re-write via internal sequences (ie., the service menu options). I see no evidence that it opens the phone up to any greater security risk rather it is on or off. However, I definitely am not an expert and look forward to an explanation from someone that is doing more than theorizing.
[AT&T Samsung Galaxy S 4 General] whatthe79:
Any Telus or Roger's galaxy s4 unlocked successfully?

Since the firmware update, the menus look different and I can't seem to access them.

Please pm me if anyone has good advice.

Thanks
[AT&T Samsung Galaxy S 4 General] SUDroid:
Also, I wanted to know what is the difference between unlocking free by using this method and Unlocking it via ur service provider. Does the system goes through the same steps?
[AT&T Samsung Galaxy S 4 General] scott14719:
Service provider gives a code. The phone asks for the code to be entered when it detects a sim from a different carrier. If the phones owner didn't screw something up via the "free method", the code is taken and the phone is sim unlocked.

The "free method" involves using the service menu to restore a previous version of the phones software (NV memory) that sometimes includes an unlocked modem. It works for some. The problem is, no one seems to know exactly what is on each phones backed up NV memory. Sometimes it just doesn't work (no other damage), sometimes it doesn't work but also caused the carriers unlock code not to work (need to USB unlock at that point), and sometimes it doesn't work and major screws the phone in the process. In this case, people have reported highly diminished signal, or unrecognized sims even with their own original sim card.
[AT&T Samsung Galaxy S 4 General] travisobvs:
Has anyone else tried this?

Thanks for the post.
[AT&T Samsung Galaxy S 4 General] tony1208:
Have you guys recently calling your providers for a unlock code? Att gave me a uock code for free last week...

Sent from my I337 Galaxy S4
[AT&T Samsung Galaxy S 4 General] javier_83:
i tried with Telcel, but they didnt want to give me any code, they told me that they have an agreement with the USA Carriers, so they can charge the International Roaming, so i can not unlock my cell phone because of that -.-"
[AT&T Samsung Galaxy S 4 General] tony1208:
Dam that sucks..

Sent from my I337 Galaxy S4
[AT&T Samsung Galaxy S 4 General] javier_83:
TOTALLY!! actually the Telcel rom, have a Hard Lock customization so if i put another sim it will tell me that my sim is invalid instead of asking me to type the unlock code...
[AT&T Samsung Galaxy S 4 General] Jose0726:
Didnt work for me on canadian model with mg3 :/ hidden menu not available
[AT&T Samsung Galaxy S 4 General] mzahs:
I believe this has been mentioned before. You can try calling ATT and might be able to get code directly from them, especially if you are three months into service with them.
[AT&T Samsung Galaxy S 4 General] godeyes:
I think I am in the case that free method does not work for me and the carriers unlock code does not work neither. Is the USB unlock permanent? If so, where can I get it? Thanks.
[AT&T Samsung Galaxy S 4 General] scott14719:
It's mentioned several times throughout this thread.
[AT&T Samsung Galaxy S 4 General] rfb813:
Look here:

http://xdaforums.com/showthread.php?t=2328135&page=3
[AT&T Samsung Galaxy S 4 General] godeyes:
thanks for the information!
[AT&T Samsung Galaxy S 4 General] verifyfx:
I've used kinda similar process with ATT SGS3 and work wonders. I was actually surprised how easy to get it unlocked :eek:
[AT&T Samsung Galaxy S 4 General] n70shan:
can we unlock any other samsung galaxy phones with this method?
[AT&T Samsung Galaxy S 4 General] MontChrist:
Does anyone know how to undo this steps to make it locked again?
[AT&T Samsung Galaxy S 4 General] jd1639:
You can't. Once unlocked it'll always be unlocked.
[AT&T Samsung Galaxy S 4 General] MontChrist:
Thanks for the advice jd1639 :highfive:
[AT&T Samsung Galaxy S 4 General] tamkhanh:
thanks...this works great
[AT&T Samsung Galaxy S 4 General] LancerEvoDrifter:
HELP!

I have been trying this method on my AT&T Galaxy S4, so far, it's a no go, and I specially followed every instruction here, but I still get it to unlock on my T-Mobile sim card!, any help!?
[AT&T Samsung Galaxy S 4 General] Caifan09:
What Baseband are you on, I succesfully ulocked my at&t S4 using these instructions. I was on baseband MDL.
[AT&T Samsung Galaxy S 4 General] Masaker514:
Is this method working on the Canadian SGH-I337M model?
[AT&T Samsung Galaxy S 4 General] LancerEvoDrifter:
I was using a custom to test it out, and then I saw somewhere else that I have to use full stock, so I odin back to MDL stock and tried the same method, but no cigar
[AT&T Samsung Galaxy S 4 General] Masaker514:
Check the T-mobile S4 threads They have a different way to unlock.
[AT&T Samsung Galaxy S 4 General] caccolino:
Hi guys,

I tried to do the steps in the topic "How to SIM unlock Samsung Galaxy S4 SGH-M919 (tested - works) - Updated: 07/02/13"

and "Unlock s4 for free with hidden options"

but does not work.

here is my phone:

Samsung SGH-I337

Android 4.2.2

baseband I337UCUAMDL

Build JDQ39.I337UCUAMDL

if anyone can help me thank him for always.
[AT&T Samsung Galaxy S 4 General] Goodborn:
Finally got to try the unlock with a Telus phone and it did not work. It asks for a pin to unlock it. Any other free methods?
[AT&T Samsung Galaxy S 4 General] Masaker514:
His phone would of worked without the lock because Fido/Rogers are the same company. My phone is Rogers but works with my fido sim. He needs to try another sim as in telus or bell to make sure his phone is really unlocked. To be very honest i think this method is dead if your phone is made after a certain date even though we can access the service menu.
[AT&T Samsung Galaxy S 4 General] nikhil.patri:
unlocking not working on S4 I337 MDL binary

Please let me know the procedure to unlock AT&T S4 I337 MDL binary phone. Free method i have tried but ists not working .
[AT&T Samsung Galaxy S 4 General] andrewdroid:
The free method didn't work for me so I just bought an unlock code off eBay for $7. It worked perfectly, but you'll need a non-at&t sim in order to enter the code. You can also use an MVNO just not one that uses the at&t network. I bought a Lycamobile micro sim off ebay for $1. The foreign sim doesn't need to be registered or anything, so don't worry about that.

I tried actually contacting at&t but I was told they changed their unlock policy now, they only unlock the phones now if you're finished with your contract. It used to be 90 days only =(.
[AT&T Samsung Galaxy S 4 General] santhikiran4110:
I just folled the OP instructions
[AT&T Samsung Galaxy S 4 General] Masaker514:
Guys and girls. Any phone that was ever upgraded to the newest firmware will never be able to use the method. EVEN IF you downgrade the firmware. Stop wasting your time. Ebay offers codes for 7$ just look.
[AT&T Samsung Galaxy S 4 General] scott14719:
http://xdaforums.com/showthread.php?t=2450129

However, I still recommend obtaining a code and NOT using this method.
[AT&T Samsung Galaxy S 4 General] Masaker514:
I honestly don't have the t-mobile model I have the Canadian I337M. My phone is able to get in service menu I'm still on the old firmware. My perso sha was also already off. I did the backup as well still got lock code screen. Also my real name is Scott.
[AT&T Samsung Galaxy S 4 General] xda23:
Will this work on the tmobile Gs4? Thanks
[AT&T Samsung Galaxy S 4 General] ryderz17:
tried two different free methods and still get get it unlocked. Canadian SGH-I337M....any ideas?
[AT&T Samsung Galaxy S 4 General] bilalwiggles:
mobileincanada.com it costs 20 bucks for telus,koodo, rogers and fido. 35 for the rest. i got my code for a telus phone in 10 minutes. no joke.
[AT&T Samsung Galaxy S 4 General] aratta:
Hello! Please help me!!! im do all what writed in the first post, and when im inserted another sim card i dont see screen with request of unlock code, any sim card cant registering in networks, phone see networks and showing level of signal, but when i try calling i see message - cant registered in network, or something else. when im trying back up PERSO SHA256 OFF or ON its still nothing, and i dont see again request about unlock code..... what i need to do now?
[AT&T Samsung Galaxy S 4 General] ma678:
Buy an unlock code instead.
[AT&T Samsung Galaxy S 4 General] aratta:
Yes I want buy unlock code but I don't see unlock screen now, I try on perso on and nothing
[AT&T Samsung Galaxy S 4 General] eaponte23:
Used this method and unlocked my recently purchased S4 on AT&T. It came with MDL :)
[AT&T Samsung Galaxy S 4 General] ~wolverine~:
I have no need for it but figured what the hell. I did all the steps and everything went smooth. After I put a different SIM in it still asked for the unlock code. So no joy here. MDL firmware.
[AT&T Samsung Galaxy S 4 General] motumbo:
It's been told before that anyone having the issue that unlock code doesn't work should do an NV rebuild. It happened to me that I tried this service menu method but still locked, so I got an unlock code but it didn't work, then I did NV rebuild and instantly the code worked.
[AT&T Samsung Galaxy S 4 General] eaponte23:
I have no immediate use unlocking my S4 either... Figured Id go for the hat trick having my phone unlocked, rooted and running custom roms :p
[AT&T Samsung Galaxy S 4 General] JJ5150:
Works great. I'm Rooted and on a Custom Rom. Unlocked it, went to walmart and bought a Straight Talk Sim. just got done texting my girlfriend for close to 3 hours. :D

Keep in mind Step 7: requires several (menu button, back key) to get to the main menu. Works great. So long At&t. I'll pay the $350 to end my contract if I can get on prepaid any day.
[AT&T Samsung Galaxy S 4 General] Dark77star:
Method failed for me - running MDL

Hi there,

I just tried this method of unlocking my AT&T SGS4. I had flashed the stock MDL SW version today, as my unit had been running MDB until today.

The flash of MDL worked perfectly through Odin. Then I attempted to run through this unlock method. It looked like it was successful after I had downloaded and installed the Service Menu app: The SHA256 setting was set to 0. I then ran through the option to enable AWS and additional LTE bands on this unit: http://xdaforums.com/showthread.php?t=2291589

Then I shut it down and inserted a T-Mobile SIM, which had worked great with a T-Mobile SGS4 last week. I started my phone: it eventually said, "Invalid SIM Inserted". As a result, I assumed that the unlocking process had failed.

So I went ahead and checked in the UMTS settings to see if the SHA256 setting was still OFF. It was NOT. Evidently the phone had restored the setting and kept it on. I tried multiple times to unlock it, restoring the golden master each time. Each time I would reboot, there would be an invalid SIM error.

Eventually I gave up and called AT&T. They unlocked my phone anyway.

Unfortunately, even though I was able to unlock the phone through AT&T, I still noticed several major issues:

1. I was not able to place or receive any phone calls.

2. I was not able to use any data whatsoever.

3. I could send / receive text messages, but that took a long time to begin sending and receiving.

Do you think that I screwed up my phone by running the AWS enable process prior to having the unlock process be successful?

I tried setting the APN manually using the info in an APN settings app called APN Tweaker: it worked to enable the data settings only, but on a very unstable basis. Eventually phone calls started working, but data is disabled after the phone call.

Would anyone have any suggestions on how to address these issues? And/OR to restore the phone, including all modem firmware, etc. to stock MDL?

Thank you for your time!
[AT&T Samsung Galaxy S 4 General] scott14719:
These issues (or issues similar to these) were reported throughout this thread. You should have read the thread. You could try different APN settings and manually input them. You will need to search to find out what the different settings are. I'm pretty sure the AWS thread lists several. If you were on MDL firmware, you didn't need the service menu app, all of the service menu options were already available to you. I would suggest trying to use ODIN to re-flash MDL, but I'm pretty sure it won't help your call and data issues. Messing with the NV memory is always a gamble. If after reading this entire thread or trying to restore the firmware doesn't help (or you decide to not take the advice) you might want to consider insurance or warranty remedies.
[AT&T Samsung Galaxy S 4 General] candy.chiu.ad:
applying the procedure to s3

I am trying out this procedure on an s3. Everything shows up until the last step NV restore. My phone didn't show "Golden backup exist". I went ahead and pressed NV Restore. It says there's nothing to restore. Does anybody encounter this before?
[AT&T Samsung Galaxy S 4 General] scott14719:
This is a S4 forum. Maybe a S3 forum would be a better place to ask about S3s.
[AT&T Samsung Galaxy S 4 General] Dark77star:
Back up and running - for now

Thank you for responding. I took a look at the thread, but probably missed the posts in question

Fortunately, I had made a backup of the previous NV modem "firmware", and so I was able to get the phone to a usable state by restoring the previous modem NV "firmware". Eventually, after a very long time, I was able to send and receive calls and texts and perform data operations on T-mobile. I then installed the latest Cyanogenmod nightly and it's been very smooth sailing with both T-Mobile and AT&T.

I'm wondering if the Stock AT&T GS4 ROM is so "tied" to AT&T that it had issues even after the phone was unlocked?

No matter: CM10.2 is nice and the phone works.

Thanks again for your advice.

Best Regards,

Eric
[AT&T Samsung Galaxy S 4 General] scott14719:
The actual Golden Backups (NV memory backups) that ship with the S4s vary, and nobody can predict which ones work well and which ones actually harm the phones. So it's basically a gamble. But you did a very smart thing making a backup before you did the restore. It probably saved you a lot more trouble than you had. It's good to hear you have your phone in good working order now.
[AT&T Samsung Galaxy S 4 General] motumbo:
I've been trying to get an unlock code from ebay since last saturday but no luck. I tried two different providers so far but both of them say att unlocking servers are down for maintenance right now and they just refund me. Somebody knows if att unlocking servers are down?
[AT&T Samsung Galaxy S 4 General] jasontran2010:
flash different Canadian stock rom on S4 I337M

Hi everyone

does it safe to flash different Canadian stock rom on S4 I337M? (ie: Rogers rom on S4 Bell)

Thanks
[AT&T Samsung Galaxy S 4 General] ma678:
I flashed Telus rom on my Fido S4. No issue so far. FYI I haven't rooted my phone.
[AT&T Samsung Galaxy S 4 General] StifflerServices:
Can this be done on the I545 Verizon version? Sry if it was already asked
[AT&T Samsung Galaxy S 4 General] AirBear613:
I was just doing this on my Rogers S4 and I accidentally clicked on 5 Erase Only Backup... Now I have no more golden back up :( Did I screw myself here?
[AT&T Samsung Galaxy S 4 General] jasontran2010:
Thanks.

does anyone else had tried it?. if that work then while waiting for unlock solution we can flash our S4 to whatever Canadian carrier ROM and use it right
[AT&T Samsung Galaxy S 4 General] jd1639:
No, it won't unlock your phone to the other carrier

God promised man he'd put beautiful women in all corners of the world. Then he laughed and laughed and made the world round.
[AT&T Samsung Galaxy S 4 General] jasontran2010:
Thank you, that's good to know. for now I had no chance to unlock my S4.:(
[AT&T Samsung Galaxy S 4 General] ma678:
I think you can still unlock your phone via a working code.
[AT&T Samsung Galaxy S 4 General] att85:
Just wanted you to know that I bought a unlock code from eBay for 2€ and it worked on stock 4.2.2 MF3 firmware.

Did nothing with the service menu. Phone is just rooted.
[AT&T Samsung Galaxy S 4 General] jojo665:
can you share which ebay item you used ? thanks
[AT&T Samsung Galaxy S 4 General] att85:
ebay username: livewirecebu11
[AT&T Samsung Galaxy S 4 General] sharingspider:
Step 3: Press Menu one more time and tap back again. This will pull up the Main Menu for ServiceMode. Tap [1] UMTS.

Doesnt show me the this menu - It just stays where it is - Tried a few times - I am on AT&T SGH-I337 running Android 4.2.2 - Please advise what can be done to bring this Menu up !!
[AT&T Samsung Galaxy S 4 General] crzygrmn:
Mostly just canadien phones like s3 s4 note2

Att I have no idea , since I cant test it myself

You can downgrade to OLDEST firmware available for your device and unlock for free with hidden options. It will work.

After that you can change csc to whatever carrier you want by using this code below.

WARNING IT WILL ERASE EVERYTHING BACK TO STOCK

*#272*YOUR IMEI#

DO NOT UPDATE FIRMWARE TILL YOUR DONE

IT WORKS FOR ME EVERYTIME

Sent from my SGH-I337M
[AT&T Samsung Galaxy S 4 General] att85:
Same here..it's because of the new firmware as far as I know (search for MF3).

This means you need to buy an unlock code. ....At least this is what i did (see some post before).
[AT&T Samsung Galaxy S 4 General] sharingspider:
Has any tried downgrading the firmware and then tried OP's method ?
[AT&T Samsung Galaxy S 4 General] jd1639:
Down grade from mf3? Can't be done.
[AT&T Samsung Galaxy S 4 General] krzychnip:
if only.....:crying:
[AT&T Samsung Galaxy S 4 General] prelude91sit:
i flashed back to mdb still ask for code... i flashed back mdl which i believe is the first stock rom for att s4. go through the steps. still asking or sim unlock code:mad: i have done this in the past successfully. under network lock i get a rat_free as the option as well. which stayed there throughout the process of my downgrading stock roms. any help would be greatly appreciated. i bout ready to just by the code. any suggestions other than fastgsm? thank you
[AT&T Samsung Galaxy S 4 General] shremi:
Let me save you some headaches In my experience I used the method to unlock then I was showing to one of my friends how to do it and the phone asked for a code. I bought the code via eBay didn't work I talked with att they gave me the same code and it didn't worked. Bought a code from fastgsm and also was the same code and didn't worked.

So the only option that worked for me was the fastgsm USB method.

I don't know why but it was the only thing that worked for me. I hope it'll save you some time.
[AT&T Samsung Galaxy S 4 General] crappleton:
they failed to give me unlock code & beem3 weeks with NO credit back yet:(
[AT&T Samsung Galaxy S 4 General] prelude91sit:
I unlocked it using a code I got from unlockunit. they charged me about $24 wish I paid only $10. thanks for reply
[AT&T Samsung Galaxy S 4 General] FutbalFr3ak:
NEED HELP

I have tried many options and different *# get to different menus but none let me soft key "back" and one i found gets me to debug but doesnt have option 6 "phone control" .... I have searched everywhere and getting frustrated cant find a solution. SOMEONE PLEASE HELP!?
[AT&T Samsung Galaxy S 4 General] mattgyver:
There's an app called "Samsung Service Mode". It got me into the UMTS menu, then from there I followed the instructions.

Sent from my TARDIS
[AT&T Samsung Galaxy S 4 General] att85:
Buy a code from ebay username: livewirecebu11 for 2€. It worked at least for me. Cheap and easy!
[AT&T Samsung Galaxy S 4 General] jev3gs:
I give up. My first S4 unlocked without a problem. Then I had to exchange it for a replacement unit, which is MDL, and it won't unlock for the life of me.

I have tried this 5 times and nothing. I even Odin back to stock, same problem. I wonder what Att did to it but it us ticking me off. Also i really don't want to pay $30 to unlock it either.

Why do you make me soo mad At&t??
[AT&T Samsung Galaxy S 4 General] Xetalx:
Also unlocked my I337M for 20$ in 7 min !!! Lost Hours on that risky free ghetto unlock......

:good: for mobileincanada.com
[AT&T Samsung Galaxy S 4 General] tal27416:
Sim Unlock AT&T Galaxy s4 Running MF3

came across this link using chainfires region lock away and was successful running TMO on my AT&T Galaxy S4 running MF# firmware with the locked service menu (*#0011#)

follow this link to the developers APK and if you like please buy him a beer or at least say thanks

http://xdaforums.com/showthread.php?t=2470551
[AT&T Samsung Galaxy S 4 General] nativesmiley:
does anyone know the default settings inside service mode??
[AT&T Samsung Galaxy S 4 General] Mysticales:
Would love to know this too.. didnt find out till tonight that PA Gain State can be altered.. somehow.. now it doesnt wanna change its value at all like it did earlier tonight...
[AT&T Samsung Galaxy S 4 General] TRoN_1:
So, a bunch of people here are claiming they used cellunlocker.net(fido/rogers users included) to unlock their S4 for $8, but when I try it says $25. Inflation??
[AT&T Samsung Galaxy S 4 General] IceTwig:
I have a AT&T Galaxy S4 SGH-i337 on MF3 and Region Lock Away unlocked the Region & SIM. I tested it with a T-Mobile SIM. The OP DOES NOT CLAIM it will work with the SGH-i337 but I have unlocked a S3(SGH-i747) a S4(SGH-i337) and a Galaxy TAB 2 (SGH-i497) it was worth the few bucks.

https://play.google.com/store/apps/details?id=eu.chainfire.regionlockaway&hl=en
[AT&T Samsung Galaxy S 4 General] TRoN_1:
By OP you mean the person who started this thread in " AT&T, Canadian Bell, Rogers, Telus, Virgin Samsung Galaxy S 4". Maybe I'm wrong but this category is supposed to be for SGH-i337 models only. I also DO NOT CLAIM anything.
[AT&T Samsung Galaxy S 4 General] IceTwig:
By OP I mean the OP from the Region Lock Away thread