yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S 4 General] scott14719:
It would seem the original thread is actually here...

http://xdaforums.com/showthread.php?t=2283068

as already mentioned by romracer on the second page of this thread.

I think the OP should give credit for this.

However, similar methods have also been used on the S3 but whoever got it to work on the S4 or figured out how it worked on the S4 should be credited unless there are circumstances for doing otherwise. I don't see any reason to close the thread.
[AT&T Samsung Galaxy S 4 General] skedi:
which modem/rom are you on? made in korea?
[AT&T Samsung Galaxy S 4 General] Bailen:
When I unlocked I was running unrooted and completely stock build with Baseband: I337MVLUAMDJ.

And yes, its a made in Korea unit.
[AT&T Samsung Galaxy S 4 General] kleeman7:
My wife and I just got our phones about 5 days ago, and I unlocked ours last night. UAMDL for our baseband. 16gb model.
[AT&T Samsung Galaxy S 4 General] skedi:
I give up, will probably pay the $30 for unlock
[AT&T Samsung Galaxy S 4 General] richguypoor:
I have the AT&T version and the unlock worked the first time. HOWEVER, EVER SINCE THE UNLOCK MY CELL PHONE RECEPTION APPEARS TO HAVE DEGRADED SIGNIFICANTLY. I have been using this for several days and my reception seems to be consistently weaker than normal. I am currently at my in law's and have no cell reception at all. Good thing for wifi. Has anyone else had an issue like this?

Question 2: is there any way to undo this so I can switch back and forth to determine if it's my imagination or something. BTW, I verified my network and APN settings were correct before writing this.

Thanks for your help.
[AT&T Samsung Galaxy S 4 General] shinku:
What's your build version? Mvluamdj?
[AT&T Samsung Galaxy S 4 General] mrdigit420:
Just did all the steps, all went smoothly but can't test as i dont have any other lte sim but thanks OP will report back soon
[AT&T Samsung Galaxy S 4 General] skedi:
you just need a sim that will fit, doesnt have to be lte.
[AT&T Samsung Galaxy S 4 General] mzahili:
Sorry Guys, this will not unlock gS4 from Rogers. You will be able to go through all the steps and will reboot but want's unlock.

Thanks

mz
[AT&T Samsung Galaxy S 4 General] ToniCipriani:
Same on Fido S4, but seems like Bailen managed to unlock it. More info please?
[AT&T Samsung Galaxy S 4 General] ma678:
+1
[AT&T Samsung Galaxy S 4 General] jimbo075:
did NOT work for me...HELP please!!

I got my upgrade from Orange UK yesterday Samsung Galaxy S4 GT-I9505 and i follow all the steps but it won't unlock....Been trying it all day as i read some threads about some people being successful in unlocking it after they tried the same method 3-4 times.

Mine won't UNLOCK at all....please HELP!!!

Everytime i think it done it as soon i insert another network sim card phone ask me for Network sim code so i put back again my orange sim and i tried again the same method but it won't unlock

Please someone help!!
[AT&T Samsung Galaxy S 4 General] XxSHaDoWxSLaYeRxX:
It works.
[AT&T Samsung Galaxy S 4 General] WarbyParker:
I have a Rogers MVLUAMDJ build.

I tested with a Chat-r wireless card and it worked.
[AT&T Samsung Galaxy S 4 General] ToniCipriani:
Chat-r is owned by Rogers, so not sure if that's a good test. Try it with a Bell or Telus card...
[AT&T Samsung Galaxy S 4 General] ChronoReverse:
Yeah, keep in mind that just because you can go through all the steps and get the reboot in the end doesn't mean it's unlocked.

My Virgin Mobile SGH-i337m doesn't unlock with this method anyway.
[AT&T Samsung Galaxy S 4 General] shinku:
Rogers phones work with fido and chatr without the need to unlock it and vice versa. I'm using fido's s4 on Rogers without unlocking it.
[AT&T Samsung Galaxy S 4 General] truciet:
Just did a 32gb S4 on AT&T and it worked 100%.
[AT&T Samsung Galaxy S 4 General] richguypoor:
Is there any way to undo this?

I have had reception problems ever since I unlocked and my call history has not worked since unlock. The last call shows 5 days ago and when I try to scroll the call history I get an error saying Contacts has stopped. I was on stock rom when I unlocked. I have since tried AOKP and CM 10.1 with the same results.
[AT&T Samsung Galaxy S 4 General] LostInMyHead:
Call in and have your cell service reset...
[AT&T Samsung Galaxy S 4 General] rogersa2k:
Has anyone found a solution for the when you dial a code and nothing happens? And when you press the dial button you get "Connection problem or invalid MMI code"? I tried *#0011# and *#9090# and *#27663368378# with the same results every time... nada!

I have a 16GB SGS4 on AT&T running MDL. It is stock but with most of the Samsung and AT&T bloatware frozen via TiBu.

Thanks,

Aaron
[AT&T Samsung Galaxy S 4 General] evilive27:
Worked for me. Used T-Mobile sim in the states. Worked just fine. Maybe some work and some don't.
[AT&T Samsung Galaxy S 4 General] jmartinezg:
Thx 4 unlock thread

Cool....I did it! no issues

s4 from telcel Mexico
[AT&T Samsung Galaxy S 4 General] willxander3:
It work for me, AT&T S4 using it on T-Mobile, Thx

Sent from my GNOTE2
[AT&T Samsung Galaxy S 4 General] @rbiter:
T-Mobile version. Sim unlocked first try. Using atnt sim.

Sent from my SGH-M919
[AT&T Samsung Galaxy S 4 General] ma678:
Anyone on Fido has unlocked S4 successfully?

Thanks.
[AT&T Samsung Galaxy S 4 General] kimqwerty:
I am having the same problem as Aaron. None of the codes that I dial via the phone app work. I get the "Connection problem or invalid MMI code" popup windows.

I just bought the phone from AT&T today. 16GB SGS4 White.
[AT&T Samsung Galaxy S 4 General] rogersa2k:
What's really annoying is that my coworker has the T-Mobile version of the SGS4 and the *#9090# code works just fine. :eek:

- Aaron
[AT&T Samsung Galaxy S 4 General] Wheisenberg1927:
Worked on Att MDL

It worked for me. Non rooted att with MDL...Still need to test a dif sim to confirm, however everything mentioned happened. :fingers-crossed:

I will add OP's step 7 is confusing since you have to hit menu + back a few times until you're in main menu.
[AT&T Samsung Galaxy S 4 General] WarbyParker:
Just tested with a Wind sim and it didn't work.
[AT&T Samsung Galaxy S 4 General] ma678:
Neither does mine.

How do you know that yours is unlocked?
[AT&T Samsung Galaxy S 4 General] WarbyParker:
Once my phone started up it asked me to enter a network unlock code.

Then there was a notification saying incompatible sim card.
[AT&T Samsung Galaxy S 4 General] ma678:
The same thing happens to mine. I'm not sure if mine has been unlocked.
[AT&T Samsung Galaxy S 4 General] WarbyParker:
If that happens it means it is still locked.

Anyone have any luck unlocking?
[AT&T Samsung Galaxy S 4 General] richguypoor:
Thank you for the suggestion, but didn't help any. Reception is still borked. I would NOT recommend anyone use this method.
[AT&T Samsung Galaxy S 4 General] scott14719:
Well, since you are already derped, maybe this will help.

Go back through the steps and when you get to the option to choose sha256off, choose sha256on instead. Then go through the rest of the process as posted and see if you don't have another "golden backup" ready to restore with sha256on. Maybe restoring the golden backup with sha256 on will fix you. Or maybe it will be worse, I don't know, but it might be worth a try if nothing else seems to help.
[AT&T Samsung Galaxy S 4 General] Slade8525:
mine worked fine (BONE STOCK at the time) on CosmOTE in Greece few days back.
[AT&T Samsung Galaxy S 4 General] richguypoor:
I tried that. Didn't help. Don't get me wrong, the phone is fully functional, just crappy reception. Often, when I'm either at home or at work, I get no reception at all now in areas where I used to have at least a couple bars. I'm convinced it is related to this unlock. I can't believe no one else has experienced a signal drop doing this.

I may actually buy another one outright and compare them side by side.
[AT&T Samsung Galaxy S 4 General] rfb813:
I tried the unlock procedure a number of times and it did not work. Then I got the unlock code went back and set persf On to use the code. Unsucessful. Since I have the code I thought that I would unroot and do a factory reset of the phone and try to unlock. then reroot and flash my recovery with goo Manager. I have all the Twrp backups on my exSD card. so I could then just restore my Roms. Before I do this I wanted to know if anyone had tried this before.

Any Comments?
[AT&T Samsung Galaxy S 4 General] scott14719:
You can give it a try but I doubt it will work. Odin and nandroids only restore the ROM. The information being flashed in the "golden backups" goes deeper into Non-volatile memory. I am willing to bet the code you got is no good, or more than likely your phone will no longer except any code. The method in the OP is truly a dangerous method and should never have been released as a true sim unlock for everyone. Sure it works for some but it does not work for just as many and for a few, it is messing their phones up. Of course there is risk anytime you do anything to your phone.

I got my unlock code from a company called cellunlocker.com. They also offered (for more money) another code to be used by those that have tried to unlock their phones to many times and regular unlock codes no longer work. The site also offered (what seems to be) good support that will help walk you through it. I'm not sure if it is the issue you have or not and, like I said, it does cost a little more, but maybe you can check there and see if it is the solution for you.;

Until some more "real" information is released about this method, I would suggest no one else try it...or risk messing up your phone. It's your call.
[AT&T Samsung Galaxy S 4 General] rfb813:
Thanks, yes I have used cellunlocker before and that is how I got the code. I am working with them to get this unlocked. Before I have always unlocked with a code from either ATT or Cellunlocker. I have an unlocked S3 that I will use when I go overseas and leave the S4 with the ATT sim if anyone needs to get me. But I was hoping to get this phone unlocked so in the future I would use this as the backup. I will discuss with Cellunlocker. The intent to go to the Hard reset is to get all of the systems back to factory defaults. Hopefully this will also set the sim unlock codes back. After I reroot I would restore the backed up Twrp Roms.
[AT&T Samsung Galaxy S 4 General] WoodburyMan:
Does this have to be run on stock firmware? When I try this on CM10.1 I get "Connection problem or invalid MMI code"
[AT&T Samsung Galaxy S 4 General] likeitnot:
So basically why not do this even if you plan on using it strictly for your/the intended branded carrier right? I mean, when it comes time to resale you can now add a list of other carriers it will work on besides (in my case) AT&T.

Nice. I will do this later on. Though to be honest, the member talking about reception issues in the last few pages has me worried, lol (sorry you're having them, that sucks!).
[AT&T Samsung Galaxy S 4 General] rfb813:
I always unlock my Phones since I do a lot of international travel. Yes it makes the phone more valuable if you sell it in the future. When I upgrade my wife usually gets my last phone. She is not so much of a Flash addict as I am. I have had unlock issues but never a reception issue.
[AT&T Samsung Galaxy S 4 General] ma678:
My phone seems to have the similar issue after few unsuccessful attempts.

Reception seems ok, but it does drops internet connection more often at certain locations where used to have good coverage.
[AT&T Samsung Galaxy S 4 General] alphadog00:
I too have done this and it worked fine. I did it on 2 different phones with no ill effects - put in a T-mo sim to validate it works. Both fines were AT&T stock.
[AT&T Samsung Galaxy S 4 General] nomi640:
Tried every but could not make it work for rogers i337m alway got invalid sim error

any help will be appreciated.*Thanks

also I lost one bar after all the attempts
[AT&T Samsung Galaxy S 4 General] unleashed12:
Just tried this on a fresh new bell phone, (i337m), tried wind sim card after.. no go... :crying: going to have to fork over the cash for the unlock code it looks like....
[AT&T Samsung Galaxy S 4 General] cozefka:
i tried to unlock the phone with given hidden options and it did not work, then i called at&t support and they gave me the unlock code but now the unlock code is not working. I tried the code for 4 times and verified the unlock code with at&t agent on chat and still not working. I think I only have one more attempt. Do you have any idea to solve the problem? Thanks in advance.
[AT&T Samsung Galaxy S 4 General] aironite:
Worked for me thanks.
[AT&T Samsung Galaxy S 4 General] djkinetic:
confirmed working, I have an international sim I just put into my ATT S4 it works.
[AT&T Samsung Galaxy S 4 General] WarbyParker:
Has anyone tried using cellunlocker.net after failing this method on a Rogers I337M?

Looks like there are issues after failing with this method.
[AT&T Samsung Galaxy S 4 General] Trumpex:
Worked flawlessly for me on i337M on Koodo, inserted Telus sim and it worked.

Thanks!!!!
[AT&T Samsung Galaxy S 4 General] rfb813:
I'm working with them now to see if we can get this working again.
[AT&T Samsung Galaxy S 4 General] unleashed12:
Dude Koodo is owned by telus, the telus sim is not a relaible test at all. koodo and telus phones are always compatible (even iphones). so try it with another sim like rogers or bell.

---------- Post added at 07:46 PM ---------- Previous post was at 07:45 PM ----------

**** man, the same thing is happening to me on my rogers one. the code i got from ebay is NOT WORKING either, please do post up what they tell you.

and guys PLEASE DO NOT TRY THIS METHOD ANYMORE... its UNSAFE as hell it appears...
[AT&T Samsung Galaxy S 4 General] Trumpex:
Sorry, your wrong, they are sim locked to only that provider. Yes, Telus ownes Koodo, yes, Rogers owns Fido and Chattr, yes Bell leases out to Virgin and whoever else, but there phones are sim locked to that provider only. They do not work with each others sims when they are locked to that provider. Try it yourself. My friends Note 2 on Telus does not work with my Koodo card. He is about to unlock his phone with a simular Note 2 simunlock to verify it works.
[AT&T Samsung Galaxy S 4 General] unleashed12:
lmao dude, i know this before, IVe tried koodo sims in lOCKED telus phones and they work, sorry but you are the one who doesnt know what hes talking about, im serious..just try a rogers or bell sim and you will find out..just try it!

and yes the NOTE 2 works with this type of method, because ive done it myself before too! it doesnt seem to work on these s4 devices. i understand where you are coming from because ive done this type of method on a note 2 from rogers and it worked.
[AT&T Samsung Galaxy S 4 General] Trumpex:
Just digging around to see if I can find any info on what you are talking about and it seems to be dependent on the phone. Found this from Google, not the best but at least its from the official Koodo Facebook page.

https://www.facebook.com/Koodo/posts/10150875961063102

Koodo Our iPhone 4 and 4S can be used on Telus's network and vice-versa. However our other phones will need to be unlocked first before it can be used on Telus's network. Let us know if you have any more questions Kevin

My Koodo sim does not work in the Note 2, but his Telus SIM does work in mine. I didn't try it before this method so I can't comment on if this did anything, so unless the S4 always worked on both networks and the Note 2 is locked to Telus and doesn't work on Koodo would be the only way to describe my results. If I had access to a Rogers or Bell sim right now, I would test again. I assume your saying this method doesn't work which is what I will find when I try one of the other Sims?
[AT&T Samsung Galaxy S 4 General] scott14719:
Works for some, doesn't for others, and for a few, it really messes up their phones. How good are you at Roulette?
[AT&T Samsung Galaxy S 4 General] unleashed12:
Okay guys, i have another bell S4 that i tried this method on as well, i ordered the code , and the code worked (even after trying this method and this method FAILING)....so it really appears as a poster mentioned above, its like playing russian roulette with your phone.. haha

---------- Post added at 09:03 PM ---------- Previous post was at 09:00 PM ----------

yeah man, thats all im saying, just grab any rogers or bell, chatr.. hell anything that isnt koodo..grab the sim from a friend and try it in your s4.. and you will find out for sure 100%.. :good: maybe it did work for you god knows.. just from my experience, i tried it on two phones from two different carriers..and one phone might possibly be really screwed up as a result from this experience.
[AT&T Samsung Galaxy S 4 General] shinku:
I have a fido s4 using it on Rogers without unlocking it.

Only comment I can make on koodo/telus thing is my friend bought the iPhone off telus and using it on koodo without unlocking it

As others have suggested try non koodo/telus SIM and see if it works.

As for others commenting that after unsuccessful attempts of using this method even the unlock code doesn't work I'll give it try. I was unable to unlock it so will order a code through cellunlocker and post back here in few hours or tomorrow
[AT&T Samsung Galaxy S 4 General] penguinjoe:
Did this with my locked Virgin/Bell I337M.

Recognizes my Koodo/Telus Sim.

So I can say it works for me.
[AT&T Samsung Galaxy S 4 General] unleashed12:
So theres one confirm unlock from bell... my bell variant didnt work.

Now im really curious as to what makes this unlock work, works on some phones and not on others.
[AT&T Samsung Galaxy S 4 General] @rbiter:
Insert meme, you're doing it wrong, here.

Sent from my GT-N7100
[AT&T Samsung Galaxy S 4 General] oldblue910:
So today I exchanged my white S4 (which I SIM unlocked easily using the method in the OP, thank you!) for a black one. The white just wasn't doing it for me. Anyway, instead of unlocking the shiny new black one with the OP method, I tried to get the code from AT&T. Lo and behold, they gave it to me, no questions asked! I just told the girl on the phone that I was going to Canada and would be using a Rogers SIM while I was up there, therefore I needed an unlock code. I have been an AT&T customer for a month and am under contract. Methods like these are great to have just in case, but it appears AT&T, at least, will definitely unlock them for you if you ask.
[AT&T Samsung Galaxy S 4 General] WarbyParker:
Rogers charges $50 for the unlock code.
[AT&T Samsung Galaxy S 4 General] oldblue910:
That's lame.
[AT&T Samsung Galaxy S 4 General] beef1218:
I called ATT today and asked for an unlock code but got shot down. I used the same going abroad reason but was told that the phone has been activated on my account for less than 90 days and the system doesn't allow them to get an unlock code...

Anyway, for those that don't have a T-mobile sim to test if your phone is unlocked or not, you can get a T-mobile sim for free:

http://slickdeals.net/f/6068788-Free-T-Mobile-SIM-Card-Activation-Kit
[AT&T Samsung Galaxy S 4 General] oldblue910:
That sucks, man. You might want to call and talk to somebody else.
[AT&T Samsung Galaxy S 4 General] rfb813:
What happened? Did it unlock?
[AT&T Samsung Galaxy S 4 General] shinku:
Unlock code worked

AS promised here is how things went. I got the unlock code from cellunlocker for $7.99

I wasn;t planning on getting the code yet, as coming from an S3 I had to flash European 4.1.1 build to get the UMTS menu to use the free unlock method and it worked. So I figured in few months everyone sharing their feedback we should be able to figure out why it works for some and not for other. However, reading few posts on here that even after using the unlock code they were unable to unlock the phone got me little concerned. Figure I better try it before it’s too late to do anything.

Just for everyone’s info, I;ve tried this free method on stock rom, rooted stock rom, I flashed wanamlite i9505 rom, bobcat rom, but all attempts were unsuccessful even though I knew, if it didn’t work with the stock rom it won’t with any other rom as NV build is probably in non-volatile memory. So needless to say I’ve messed around with this phone every way possible

But to my delight, I got the code and it unlocked the phone without any issues. I didn’t had to do anything to perso sha256 on as some stated they had to do that. Only thing I did was restored my nanddroid backup of rooted stock rom prior to entering the code.

I;ve heard some codes from ebay are not working so not sure if ppl are getting bad code or if there is something else that’s the root cause.

Hope this info helps you guys
[AT&T Samsung Galaxy S 4 General] cammeron1978:
Ive tried everything. .countless times..gotten exact same code from 3 different unlock companys and after trying this meathod NOTHING is working phone will NOT accept any code..might have to get an unfreeze code or possibly unlock by cable..broke so I gotta wait for 40 bucks to try both methods. .bad news this is borking peoples phones so they canyt be unlocked..tried every method resetting lock to on restoring golden backups loading default nv...NOTHING be careful people
[AT&T Samsung Galaxy S 4 General] dvsdlite:
Hey... just call at&t and ask for ur unlock code. Worse case tell them you are going overseas. Takes anout 5 mins. I did it through customer service online.
[AT&T Samsung Galaxy S 4 General] scott14719:
I hate it about your phone, but why didn't you pay attention to the several warnings that have already been posted in this thread?

It always get me when someone posts about the potential dangers of a certain method yet there are still people that say "hey man, this broke my phone!"

Like I said, I hope you can get your phone issues worked out, I just don't understand why you or anyone else would try it when warnings have been posted already?
[AT&T Samsung Galaxy S 4 General] rfb813:
I am one of those that have had a problem. This is the first time I used anything other than the code from a unlock service or ATT. I have to say though that my phone is still working beautifully. unlike some that have indicated that heir phones are not functioning correctly. I am sure that I will ultimately get the phone unlocked. But this has caused me a big hassle.
[AT&T Samsung Galaxy S 4 General] cammeron1978:
How else would the warnings get posted??..people try them they dont work so people post warnings for others to see..

It always gets me when people post crap that has nothing to do with issues at hand..read the thread title..this is what we are here dor is to TALK about our experience and maybe the community. .WORKING TOGETHER..can solve the issue at hand..

ON A RELAVANT NOTE...got code from at&t..actual cose and still gettin nowhere..unlock unsuccessful. .someone mentioned using a activated sim card..mine is old tmo sim that is dead I think..coupla pages back someone also posted a link for a free tmo prepaid sim..ordered on and soon as I can try a use-able sim ill let people know my finding if its helpful ;)

---------- Post added at 04:39 PM ---------- Previous post was at 04:36 PM ----------

And I guess I missed the "several" warnings..seen a couple but nothing to scare me from attempting to see..how else would anyone ever figure it out without some sac. ;)
[AT&T Samsung Galaxy S 4 General] Bigbmccarty:
It worked for me. I followed the instructions, which btw, of they were any similar they would be in crayon. I did it a few days ago with no way to test it. I went on to searching for roms. Flashed a few (with factory reset and wipe each time) but gave up and redid all my stock stuff until some devs get some roms made for this phone. Back to the matter at hand. I passed an off brand cell phone store that advertised unlocking and flashing. I had the guy put a tmobile sim in and all I had to do was go into the settings and select the tmobile apn. He offered to pay me to teach him because he couldn't believe it. I declined. One you start making money on a hobby, it's no longer a hobby.
[AT&T Samsung Galaxy S 4 General] fgoyti:
If you're in Canada, just wait until December and your provider will have to unlock it for free due to the new CRTC ruling :)