Develop Bugs

Network Unlock your ATT SGS3 for free (howto)

I just saw this on Reddit and tried it on my ATT SGS3. I used an old StarHub SIM I had laying around and it didn't ask for the unlock code, so I'm pretty sure it worked.
The instructions are for the GSM Note 2, but the author says it works for the GSM SGS3, too.
http://forum.xda-developers.com/showpost.php?p=34661189&postcount=1
I think you have to be on a stock ROM to get it to work. I was running UCALH9, bone stock. Don't forget to thank the OP on the other thread!

It doesn't work on TELUS SGS3 :/
Sent from my SGH-I747M

yulet said:
It doesn't work on TELUS SGS3 :/
Sent from my SGH-I747M
Click to expand...
Click to collapse
just tried it everything seems the same any way to tell without putting in another sim?

AndreaCristiano said:
just tried it everything seems the same any way to tell without putting in another sim?
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Click to collapse
I don't know. Since the SIM I had laying around was not a mini-SIM I had to chop it up, too. O_O
In theory you don't ever see the unlock prompt unless you insert a non-network SIM anyway, so I don't think there's any way to check without one.

yulet said:
It doesn't work on TELUS SGS3 :/
Sent from my SGH-I747M
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Click to collapse
Same here. I tried all the steps, but when I got to "now you are in [6] Network Lock then choose [4] NW Lock NV Data INITIALLIZ", I didn't have the "[4] NW Lock NV Data INITIALLIZ" option, just the original 3 choices.
Ian

Ok so I didnt think this would work but it honestly did took two tries but I was able to insert a tmobile sim on a locked att phone without being prompt for the network unlock code and I did confrim I was able to make a call
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w98seeng said:
Same here. I tried all the steps, but when I got to "now you are in [6] Network Lock then choose [4] NW Lock NV Data INITIALLIZ", I didn't have the "[4] NW Lock NV Data INITIALLIZ" option, just the original 3 choices.
Ian
Click to expand...
Click to collapse
Tried two different Bell phones.....same outcome.

If you are in the US with AT&T just call AT&T and tell them you are traveling abroad. You'll get the code right away. I chatted with support with a 2-week old SIII and got it right away.

The menu doesn't work on Rogers S3. oh well....

ndy4eva said:
The menu doesn't work on Rogers S3. oh well....
Click to expand...
Click to collapse
you might need to update your modem/baseband for this to work. i upgraded the modem and then these steps worked just fine. (from LG1 to LH9 on att)

This method for unlocking your phone works perfectly after Jelly Bean update on Rogers sgs3.
Sent from my SGH-I747M

Sakiwinkie said:
This method for unlocking your phone works perfectly after Jelly Bean update on Rogers sgs3.
Sent from my SGH-I747M
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Click to collapse
once you followed the procedure what sim did you try it out with besides yours

JohnM109R said:
once you followed the procedure what sim did you try it out with besides yours
Click to expand...
Click to collapse
I was able to put a sim in from Bell and I was using that network perfectly. I tested making a call and sending a text message.
Sent from my SGH-I747M

Works on Bell GS3 after 4.1.1 OTA
I also confirm this works after installing the Bell 4.1.1 OTA. This is likely due to the new modem version. Tested with a cut rogers sim.

to be fair, everyone posting this doesn't work for them is not on AT&T as the OP posted this for

Question. How do you know if your phone is unlocked? I tried this on Serenity 1.2 with LH9 modem installed and I was able to insert a SIM card that I used when I was overseas. Does that mean I'm unlocked?
Nvm, my international SIM picked up T-Mobile while roaming... even though I don't have roaming enabled ><

dLo GSR said:
to be fair, everyone posting this doesn't work for them is not on AT&T as the OP posted this for
Click to expand...
Click to collapse
Worked for me on ATT i747.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

dLo GSR said:
to be fair, everyone posting this doesn't work for them is not on AT&T as the OP posted this for
Click to expand...
Click to collapse
its working for some people on Bell and Rogers, I think the main problem is people not reading the steps correctly
Sent from my SGH-I747M using xda premium

jethro650 said:
Tried two different Bell phones.....same outcome.
Click to expand...
Click to collapse
After the 4.1.1 update this works on both Bell phones I tried before.

jethro650 said:
After the 4.1.1 update this works on both Bell phones I tried before.
Click to expand...
Click to collapse
Cool, will give this a try once I get JB.
For the moment, it's not working on my Bell GS3

Using AT&T sim on blacklisted T-mobile GS III

Hey guys,
I got scammed on craigslist and the guy won't respond. So I bought a T-mobile Galaxy S3 and it worked fine for over a week until 2 days ago when it stopped connecting or registering to the T-mobile network. I found out from T-mobile it was blacklisted as stolen/lost that day. I called to confirm the phone wasn't stolen or lost when I bought it. The T-mobile store says there is nothing they can do except offer me a new phone from the store to pay full price.
Can I unlock a phone marked as stolen/lost using an unlock code and use it on AT&T?
I tried searching the forum and I found a thread about a guy who already had the phone unlocked so he was able to use it on AT&T but in my case, the phone is not unlocked yet but is blocked from T-mobile networks.
Thanks in advance,
Buzz

Well if you unlock it before the whole illegal thing starts you can use it on AT&T.
Sent from my SGH-T999 using xda app-developers app

52me52 said:
Well if you unlock it before the whole illegal thing starts you can use it on AT&T.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
What illegal thing?
I just found out about that today?

sgs3
buzzking00 said:
Hey guys,
I got scammed on craigslist and the guy won't respond. So I bought a T-mobile Galaxy S3 and it worked fine for over a week until 2 days ago when it stopped connecting or registering to the T-mobile network. I found out from T-mobile it was blacklisted as stolen/lost that day. I called to confirm the phone wasn't stolen or lost when I bought it. The T-mobile store says there is nothing they can do except offer me a new phone from the store to pay full price.
Can I unlock a phone marked as stolen/lost using an unlock code and use it on AT&T?
I tried searching the forum and I found a thread about a guy who already had the phone unlocked so he was able to use it on AT&T but in my case, the phone is not unlocked yet but is blocked from T-mobile networks.
Thanks in advance,
Buzz
Click to expand...
Click to collapse
cellunlocker.net blaclist

Check it out
http://androidheadlines.com/2013/01...ell-phone-sign-this-white-house-petition.html
Sent from my SGH-T999 using xda app-developers app

If I unlock my T-mobile phone, can I keep the T-mobile stock rom or do I need to flash it with the AT&T stock rom?

If you are on stock, why dont you just dial *#197328640# to go to phone control menu, then network lock and turn off the network lock. If you do a google search for unlock galaxy s3 xda forum u ll see it.
Sent from my SGH-T999 using xda premium

DON'T EVER FLASH AN AT&T ROM even if you switch carriers you will brick you phone, only flash rooms from these forums
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52me52 said:
DON'T EVER FLASH AN AT&T ROM even if you switch carriers you will brick you phone, only flash rooms from these forums
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
No. You can flash at&t roms on the T-Mobile s3. Many including my self have done it many times. Same hardware.
Sent from my SGH-T999 using Tapatalk 2

That's what I told another person before and they bricked
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mustk1ll20 said:
No. You can flash at&t roms on the T-Mobile s3. Many including my self have done it many times. Same hardware.
Sent from my SGH-T999 using Tapatalk 2
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Click to collapse
1111+ Thats correct I have tried every rom out there from att and it worked on my tmobile s3. Now for the op. looks for the thread on general there is one that shows you how to unlock your phone without a code. It was meant to be for the note2 but it worked on all us s3's I have mine unlock that way put in my friends att sim and it worked fine only thing that the speed its a little slower not 2G though. And thats because att's 4g its 20ish not 42.
Any ways. If you were called tmobile and talk to a superviser they can change the IMEI number on their system and the phone would come back to work in 48 hours.
I know because It have happened to me too. It doesnt matter if you have your tmobile sim on it for at least a day tmobile computers will register that phone onto your network.
P.S the only thing that will changed from a ATT rom is that build.prop It will show that its an att rom but you can edit it to d2tmo with root explorer

Just don't flash other modems from other carriers that will Brick you.
Sent from my SGH-T999 using xda app-developers app

buzzking00 said:
Hey guys,
I got scammed on craigslist and the guy won't respond. So I bought a T-mobile Galaxy S3 and it worked fine for over a week until 2 days ago when it stopped connecting or registering to the T-mobile network. I found out from T-mobile it was blacklisted as stolen/lost that day. I called to confirm the phone wasn't stolen or lost when I bought it. The T-mobile store says there is nothing they can do except offer me a new phone from the store to pay full price.
Can I unlock a phone marked as stolen/lost using an unlock code and use it on AT&T?
I tried searching the forum and I found a thread about a guy who already had the phone unlocked so he was able to use it on AT&T but in my case, the phone is not unlocked yet but is blocked from T-mobile networks.
Thanks in advance,
Buzz
Click to expand...
Click to collapse
Search in Google how to change/fake the imei on android
Sent from my SGH-T999 using xda premium

Or you could be like screw t and unlock it after.. They are not going to fly enforce it
Sent from my Nexus 7 using xda app-developers app

gypsy214 said:
1111+ Thats correct I have tried every rom out there from att and it worked on my tmobile s3. Now for the op. looks for the thread on general there is one that shows you how to unlock your phone without a code. It was meant to be for the note2 but it worked on all us s3's I have mine unlock that way put in my friends att sim and it worked fine only thing that the speed its a little slower not 2G though. And thats because att's 4g its 20ish not 42.
Any ways. If you were called tmobile and talk to a superviser they can change the IMEI number on their system and the phone would come back to work in 48 hours.
I know because It have happened to me too. It doesnt matter if you have your tmobile sim on it for at least a day tmobile computers will register that phone onto your network.
P.S the only thing that will changed from a ATT rom is that build.prop It will show that its an att rom but you can edit it to d2tmo with root explorer
Click to expand...
Click to collapse
Why would t-mobile change the meid if its black listed

FYI... Tmobile and att share blacklists... if its blacklisted on Tmobile it won't work on att either
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clninja said:
FYI... Tmobile and att share blacklists... if its blacklisted on Tmobile it won't work on att either
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Click to collapse
Not true
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charlieb620 said:
Not true
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Click to collapse
http://www.droiddog.com/android-blo...ei-information-for-stolen-cellphone-database/
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clninja said:
http://www.droiddog.com/android-blo...ei-information-for-stolen-cellphone-database/
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Click to collapse
Not true
Sent from my SGH-T999 using Tapatalk 2

i have a note 3 from atyt and is blacklisted i want to use it with tmobile but i wanna be sure if it will work some one have tried ?

Getting my Note 2 running with Straight Talk

Hey team, I have a problem and hope someone can point me in the right direction. I have a T-Mobile Note 2 with Jedi ROM installed. I have just become a Straight Talk customer and cut a Sim card to size and put it in my phone. This is the first SIM to ever be in the phone. When my phone boots up I get an error message saying "Invalid SIM CARD!". The SIM is good as it works in the crappy flip phone Straight Talk sent me.
I go through the steps of entering the Straight Talk APN but when I try to save nothing seems to stick. Help! What am I doing wrong? Since I was on Sprint I never had to deal with SIM cards as this is my first GSM phone ...I feel I am missing something obvious.
Sent from my SPH-L710 using xda app-developers app

ibleedbloo said:
I feel I am missing something obvious.
Click to expand...
Click to collapse
Is your Straight Talk SIM an AT&T or T-Mobile one? Is your Note 2 unlocked? (If not, flash it to the original, pre-LTE update T-Mobile ROM and unlock it using instructions posted on here.)

Boy I just left straight talk because of throttling me with my gs3.
Sent from my SGH-T889 using xda premium

Thanks for the replys team. I have not 100% solved it yet but I think I'm on the right trail. It looks as if you buy a phone directly from Straight Talk (which i did just to have a cheap backup) they lock the SIM to that particular phone.
I'm heading to walmart to grab a BYOP SIM...hopefully that is my issue.
Sent from my SPH-L710 using xda app-developers app

Quick update. I picked up one of Straight Talks Bring Your Own Phone SIMs and everything is good now. Thanks for those who helped.
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[Q] Note 2 Big Issue - PLEASE HELP!!!

Sorry I m a Beginner in the android world, so i will do my best to explain my issue
Please help me all help needed
1) I bought a Galaxy Note 2 from a person - he said that Note 2 was BLOCKED by T-mobile - I verified with T-mobile and the IMEI is indeed theirs and it is BLOCKED - so we know this is a REAL phone, NOT a clone
2) when I bought it he said that the phone was unlocked and is being used on AT&T - I verified and saw that he was using on AT&T network before he Reset everything and gave to me.
3) i went home and put in my AT&T sim and the screen read "Sim Network Unlock Pin" with Unlock and Dismiss button below. I thought this was the sim lock, so i removed the sim lock, but it still show that on the start screen - so here I thought that the Phone Might have been Un-Unlocked due to Reset.
4) I went ahead and follow the direction on how to unlock S3/Note 2 from XDA (http://forum.xda-developers.com/showthread.php?t=2014982), - btw i did this Successfully on 2 S3 before. Here is another problem: Under Lock Network screen (option 6) I cannot see option 4: [4] NW Lock NV Data INITIALLIZ (Does not exist) - So I have no way of unlocking it since this option is not available.
5) I thought that he did somekind of custom rom, but no - i checked and the Binary counter is 0 - phone status is Normal.
Please help me.
All I want is to use ATT now.
Please help me I will stay all Night till this is solved.
Thanks all in advance.
BTW attached is my About screen in case anyone have question.
*** second issue that we will talk later is - i have another note 2 bought directly from t-mobile with 4.1.2 - this one does not have [4] NW Lock NV Data INITIALLIZ . either. - how weird.
I check at the store and their note 2 4.1.2 HAS that option. !!! - we shall talk about this issue at another time

Can anyone please help me

I thought Tmobile and ATT shared blacklists.. How did he use it on ATT?
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You_got_owned123 said:
I thought Tmobile and ATT shared blacklists.. How did he use it on ATT?
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Click to collapse
No, i dont think they share blacklist. When i bought the phone it clearly showed att and use normally, then i took his sim out and reset the phone and brought it home. Test with T-mobile sim right away (i have both tmobile and ATT) - t-mobile say SEARCHING.... it is block so could not find any net work, but when i pop in at&T it said "Sim unlock pin"
Also the reason y i know t-mobile and att don't share the same black list is because i used a blocked s3 on att before

Oh, learned something new today!
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You_got_owned123 said:
I thought Tmobile and ATT shared blacklists.. How did he use it on ATT?
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Click to collapse
You_got_owned123 said:
Oh, learned something new today!
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Click to expand...
Click to collapse
hi,
i did some research and i think T-mobile and AT&T will potentially share the blacklist - but don't know it worked on my s3 before.
I just came up with an IDEA and would like to hear from Pros see if it will work.
What is if Install Samsung ROM - but the international version (usually my t-mobile i would download tar.md5 from t-mobile, same for att). What would happen to my phone if i download and install International rom - would it make my note 2 INTERNATIONAL - that mean it is NOT lock to any carrier?

andrey84 said:
hi,
i did some research and i think T-mobile and AT&T will potentially share the blacklist - but don't know it worked on my s3 before.
I just came up with an IDEA and would like to hear from Pros see if it will work.
What is if Install Samsung ROM - but the international version (usually my t-mobile i would download tar.md5 from t-mobile, same for att). What would happen to my phone if i download and install International rom - would it make my note 2 INTERNATIONAL - that mean it is NOT lock to any carrier?
Click to expand...
Click to collapse
Not going to help.
CARBON NIGHTLIES. | KROZ BROWN Theme | Crack Flasher

I'm not sure how the store model had this option because it shouldn't. Anyways, use Odin to restore an older firmware then follow the unlock process and you'll be good.
Sent from my SGH-T889 using xda app-developers app

kintwofan said:
I'm not sure how the store model had this option because it shouldn't. Anyways, use Odin to restore an older firmware then follow the unlock process and you'll be good.
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
^this. Should be on any 4.1.1 then you'll have the [4] option

You have to downgrade to the lj1 modem I think. Whatever was before ll4 then unlock then reflash mb4 modem
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Stay clear from blacklisted phones. Solves this issue
I hope that blacklisted s3 was not the phone someone stole from me.. I would never buy a Black listed phone. I do know all of them are not blacklisted because reported stolen. But if you take the ability to sell them People will STOP STEALING THEM..
Just as a quick note. In The future it might be best to not Buy blacklisted or bad imei Phones.. Some are from contracts not fulfilled .. Questionable as to rather a carrier should be able to black list or not..
But equally number of them are STOLEN. What if it were your phone.
I so was not going to write this post . But it It really much different then software piracy or buying Stolen goods...
Just my opinion.. Ohh and yes i think the carriers are evil in near every way.
Good Luck and hope you get it fixed but only if it was not a Stolen phone. if it were . Well my above comment will tell you my thoughts.

Is there a way for you to talk to that person and ask him where he got the phone from? i hope this gets resolved ASAP

Hello all
Thanks for helping.
Indeed i have downgraded to 4.1.1 and now have 4 option and was able to unlock it for AT&T
However, i have a silly question that i hope to find a RIGHT answer.
I know that we can do Custom Rom for note 2 - however, I was wondering if we can install ATT OEM Rom to T-mobile note2, or T-mobile OEM Rom to AT&T note 2?
DOnt know if i made it clear enough.
Please help.
Thanks

Unlocking a sgn2 on O2 network (uk)

Hi folks.
I'm switching networks from O2 to talktalk (vodafone) and I'm wondering if anyone can direct me to a free method of doing this. I've watched the videos on youtube that allow it to be done by dialing “*#197328640#” on the phone but when I enter the network lock section it says "MENU NOT EXIST"
I'm guessing this is an O2 thing so can anyone help me find a way to get my device unlocked?
ps. Hope I have this in the correct section. I've also tried searching on here but no joy.
Thanks

johnbhoyc said:
Hi folks.
I'm switching networks from O2 to talktalk (vodafone) and I'm wondering if anyone can direct me to a free method of doing this. I've watched the videos on youtube that allow it to be done by dialing “*#197328640#” on the phone but when I enter the network lock section it says "MENU NOT EXIST"
I'm guessing this is an O2 thing so can anyone help me find a way to get my device unlocked?
ps. Hope I have this in the correct section. I've also tried searching on here but no joy.
Thanks
Click to expand...
Click to collapse
GalaxSim worth the couple of bucks.

I think you have to downgrade to a 4.1.1 rom first, unlock your phone then flash a 4.1.2 rom.
Sent from my GT-N7105 using xda premium

As above use Galaxsim and pay £2.something ? What I did
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dazza7111 said:
As above use Galaxsim and pay £2.something ? What I did
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Click to expand...
Click to collapse
I've tried using galaxsim but I'm getting
"unable to read NV data"
You guys are saying it's worth the money but the app appears to be free. I can't see a paid version only a free version.

It will ask you to buy if you want to use it to unlock.
Sent from my GT-N7100 using Tapatalk 4 Beta

Its lill risk though ...but you can game it ...in that case u need to play with efs partition. ..
I did the same to unlock my friends Rogers. ..can explain you method if willing.
Sent from my GT-N7100 using xda premium

johnbhoyc said:
I've tried using galaxsim but I'm getting
"unable to read NV data"
You guys are saying it's worth the money but the app appears to be free. I can't see a paid version only a free version.
Click to expand...
Click to collapse
I don't know what the dev of galaxsim has done but I get unable to read error too. Grab v1.4.3
http://db.tt/7bmiX3ml
This one works for me. Just don't let it update.
Sent from my GT-N7100 using xda premium

OP you sure you're locked?
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Thanks for the reply's folks.
I downgraded to 4.1.1 to try using the *#197328640# method but that hasn't worked.
I've tried using the old version kdogguk posted but i'm getting invalid IEMI number now but it's saying my phone is unlocked
my phone is locked tho as it won't take my new talktalk sim.
My phone was stuck on boot screen when I downgraded and I had to root though odin then reset it before it would work so I think I've downgraded to the wrong firmware as it is now branded O2 firmware where as before even tho it was locked to O2 the firmware was neutral (not O2 branded).
I've rooted as I said but it won't install custom roms so I have a problem now. Going to upgrade to 4.1.2 but need to make sure I have the right firmware this time.
I'm having some time of it right now lol

This galaxysim app is now saying my phone is unlocked but it won't take my talktalk (vodafone) sim

Still no luck? My note 2 was on o2 first thing I done was root it, tried that code but didnt work then used galaxsim its free but said it could be done paying £2 something. Then I installed a standard btu rom. Funny thing is not tried diffe sim yet. Just hate locked phones
Where abouts in UK are you?
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on my phone it says my device is unlocked but when i try to call any number it says not registered on network, what's the problem?

turn off data. turn off mobile. turn them back on. reboot.

Galaxsim was saying my phone is unlocked but it wouldn't take my talktalk sim. I ended up paying £9 to get it unlocked on ebay. Working fine now.

Strange because my phone is O2 but I've been running it with a 3 sim from day one.
They should be unlocked by default.
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