Database Info

unlock free proceed at your own risk!

Read all of the post and the one bellow it from cschmitt before you do anything. This also might be illegal in the USA if you bought your phone after 1/26/2013
The last few days it's been going around unlocking the note II and gs3 with some settings(http://forum.xda-developers.com/showpost.php?p=34661189). Well the good news is the method can be used on our phones! I don't know what modems work I know two that don't. I was able to use the T989 modem (Tmo_SGH-T989_UVLE1_radio.zip)to unlock my phone but others have reported UCLD2 (a skyrocket modem) works as well. after I unlocked I switched back to UCLI3 and the phone is still unlocked.
You'll need to be on a stock(or stock based) rom and you should make sure the number matches the text next to it. All you need to do is touch the row to select it. I did these steps with a O2 sim card in my phone. after the reboot your phone might take a second but it should connect to the network and be happy with your non att sim.
I have not tested this on a rogers phone. It might work it might make your phone explode in your hand and kill you. For all I know it could do the same for other ATT phones.
f_v_man said:
Go to dailer screen. press *#197328640#.
press [1]DEBUG SCREEN
Press [8]PHONE CONTROL
Press [5] SIMULATION
Press [6] NETWORK LOCK
Press [3] PERSO SHA256 OFF
Wait exactly 30 seconds
press the menu key on the phone and select back option. This will take you back to NETWORK LOCK screen.
Press [4] NW LOCK NV DATA INITIALLIZ
Wait exactly one minute and reboot the phone.
Should be unlocked.
Click to expand...
Click to collapse

Confirmed, this method works to network unlock using stock UCLD2 rom and modems (the April 15th ICS 4.0.3 leak.) Links to the CWM-flashable stock ROM and modems can be found below. Unlock was performed on an AT&T locked SGH-I727 using a TMO SIM card.
This method is modem specific, as the service mode commands vary by modem. It does NOT work with UCLA3, UCLE2, or UCLF6 modems (NV initialize menu item is not present, or non-functional.)
Note: After 'Press [4] NW LOCK NV DATA INITIALLIZ' step the phone reports ' PERSO_NV_INIT is SUCCESSFUL', then it's safe to reboot.
Confirmed that IMEI is intact following network unlock, and that unlock persists following a ROM/modem flash (back to CM-10.0.0 and UCFL6 modems.)
Awesome find, my friend!
Links to CWM flashable zips:
UCLD2 modems: here
UCLD2 OEM Stock, rooted: here

kool, i added this thread to the sticky, even though its cheap to buy an unlock code for rogers(i paid under $8 from ebay), for att users its more expensive

Hi, I'm stock ICS on ATT, if I just flash the new modem will that make any difference on my ATT service? Like not get HSPA+ service. I am currently out of the country so I can't test it with my ATT sim. (had my phone line suspended)
Also using a SIM from the Philippines... Will the type of SIM card make any difference?
Sent from my SAMSUNG-SGH-I727 using xda premium

Let me get this straight. A STOCK rom like embryo? Or back to actual stock... I'm in slim bean 3.1. And then I have to flash a new modem? Current UCLI3. Thanks!
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

kchen96 said:
Let me get this straight. A STOCK rom like embryo? Or back to actual stock... I'm in slim bean 3.1. And then I have to flash a new modem? Current UCLI3. Thanks!
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
no, flash the files cschmitt posted
UCLD2 modems: here
UCLD2 OEM Stock, rooted: here
Click to expand...
Click to collapse

kchen96 said:
Let me get this straight. A STOCK rom like embryo? Or back to actual stock... I'm in slim bean 3.1. And then I have to flash a new modem? Current UCLI3.
Click to expand...
Click to collapse
First, a stock (or stock-based) ROM must be installed. Specifically, one that includes Samsung's serviceModeApp.apk in /system/app. This is required to support the *#197328640# dialer code that brings up the modem's service menu. ROM's such as CM9/CM10/AOKP/AOSP won't work for this because they don't have the service mode interface.
Second, a modem that supports the '[4] NW LOCK NV DATA INITIALIZE' command is required. The service mode menu items that are displayed and available are a function of the modem, not the ROM-- so only specific modems can be used to unlock with this method. So far it's confirmed that T-Mobile's UVLE1 and AT&T's UCLD2 have what it takes.
Just perform a nandroid backup of the current setup, flash an appropriate ROM and modem, factory reset, reboot, perform the network unlock, reboot, verify it's success with a non-accepted SIM, then restore the nandroid backup and re-flash the previous modem.

lart2150 said:
The last few days it's been going around unlocking the note II and gs3 with some settings(http://forum.xda-developers.com/showpost.php?p=34661189). Well the good news is the method can be used on our phones! I don't know what modems work I know two that don't. I was able to use the T989 modem (Tmo_SGH-T989_UVLE1_radio.zip)to unlock my phone. after I unlocked I switched back to UCLI3 and the phone is still unlocked.
You'll need to be on a stock rom and you should make sure the number matches the text next to it. All you need to do is touch the row to select it. I did these steps with a O2 sim card in my phone. after the reboot your phone might take a second but it should connect to the network and be happy with your non att sim.
I have not tested this on a rogers phone. It might work it might make your phone explode in your hand and kill you. For all I know it could do the same for other ATT phones.
Click to expand...
Click to collapse
Great job on the research buddy working fabulous on my all my rockets 3 to be exact lol although i am a person who doesnt mind paying its always awesome to have a free method

Awesomeness. I paid to unlock my old SR but I returned it due to battery issues (long story.) Being able to unlock my new phone and force 2G networks in CM10 would be awesome. I'll try this when I get home.

Tried it with the UCLD2 modem/rom and idk if it worked... Tried twice. Both times this happened. Wiped again re flashed. Same result.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

worked for me... does the unlock "stick" even if i change roms/radios?

norazi said:
worked for me... does the unlock "stick" even if i change roms/radios?
Click to expand...
Click to collapse
yeah it does

kchen96 said:
Tried it with the UCLD2 modem/rom and idk if it worked... Tried twice. Both times this happened. Wiped again re flashed. Same result.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
If you look at the OP he used ANOTHER sim card when doing all this. I think if you have an AT&T SIM in it doesn't work. I'm guessing that's it as I had an AT&T SIM in while I was doing it and it didn't work. Try a T-Mobile or other GSM sim and see what happens. I'll be doing that later.
Update: Apparently you do NOT need to have another SIM card in when you do this, as I was working on unlocking the phone with a T-Mobile card in and before I finished (I mean like I was on step 2) I got a T-mobile signal and was able to browse the web. Best advice I can give is when you reboot, make sure you wait for a good minute to see if the phone was unlocked, as you won't get a signal immediately even if it works.

WORKS ON ROGERS i727r
Just posting that I used the rom / modem posted in the 2nd post, and it worked great.
Thank you.

Worked like a dream.
Rocking a T-Mobile pre-paid SIM now.
Nice to have options.

Just did this about an hour ago it seemed to work c: recovered my backup and my service is fine. Gonna try on my brothers T-Mobile sim when I get home. Didn't flash another radio again though. Gonna try this one. I have constant text and call retrieving problems so yeah..
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

I would like to report that I was successful unlocking while using skyICS, I just flashed the modem from the second post
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

Tested last night. Method confirmed.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

Smash2Bash said:
Tested last night. Method confirmed.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
word of advice may want to block out your number!!!

Yeah I noticed that but was a random sim doesn't even work anymore.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

Small carrier, model/build version, flashing decision issues

Just got an upgrade from my carrier (a small local carrier) and I chose the s3. Came from some Motorola peice of fail. I'm looking to root and flash an insecure bootloader but I have encountered a confusing conflict. Having a Verizon model phone with a us cellular build of android loaded. And yes I'm certain it is a Verizon model phone (google schi535mbb if you don't believe me) with us cellular stock rom loaded (with some tweeks like 4g disabled). Rom and software model say the following R530 & d2usc. Bootloader is I535VRALE6 baseband I535VRLF2. This as far as I can tell was acomplished by a company called ultimobile. Which customizes devices to function on small mobile carriers. If anybody has any ideas or suggestions on what I might try, please let me know. I just don't want to screw something up and have a brick, just coming from a device that was all but brickable.
Sent from my SCH-I535 using xda premium

Lrs121 said:
Just got an upgrade from my carrier (a small local carrier) and I chose the s3. Came from some Motorola peice of fail. I'm looking to root and flash an insecure bootloader but I have encountered a confusing conflict. Having a Verizon model phone with a us cellular build of android loaded. And yes I'm certain it is a Verizon model phone (google schi535mbb if you don't believe me) with us cellular stock rom loaded (with some tweeks like 4g disabled). Rom and software model say the following R530 & d2usc. Bootloader is I535VRALE6 baseband I535VRLF2. This as far as I can tell was acomplished by a company called ultimobile. Which customizes devices to function on small mobile carriers. If anybody has any ideas or suggestions on what I might try, please let me know. I just don't want to screw something up and have a brick, just coming from a device that was all but brickable.
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Interesting. From the sound of it it may just be software blocked. Verizon root and unlock should work. The trick is gonna be finding software that will work with that carrier. If it is using straight UC Cellular may be able to run what those guys are running. If it is that small carrier that controls access then that would be the problem. Without a backup of the stock rom don't know how you would get it running again. According to the numbers it is a Verizon S3 running Us Cellular. Good luck.

prdog1 said:
Interesting. From the sound of it it may just be software blocked. Verizon root and unlock should work. The trick is gonna be finding software that will work with that carrier. If it is using straight UC Cellular may be able to run what those guys are running. If it is that small carrier that controls access then that would be the problem. Without a backup of the stock rom don't know how you would get it running again. According to the numbers it is a Verizon S3 running Us Cellular. Good luck.
Click to expand...
Click to collapse
The recovery that's on it right now has built in options for nvbackup. From what I've read that is the radio, imei, and other files used to connect to the network. I was gonna make several backups of everything as soon as I gained root control. The real problem comes down to when I go to throw cm on here. Figuring out which vzw or usc will cooperate with the carrier files.
Sent from my SCH-I535 using xda premium

Lrs121 said:
The recovery that's on it right now has built in options for nvbackup. From what I've read that is the radio, imei, and other files used to connect to the network. I was gonna make several backups of everything as soon as I gained root control. The real problem comes down to when I go to throw cm on here. Figuring out which vzw or usc will cooperate with the carrier files.
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Make a nandroid backup and maybe post to see what your running as?
Sent from my SCH-I535 using Tapatalk 2

Addiso said:
Make a nandroid backup and maybe post to see what your running as?
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
Was definitely gonna make a nandroid, but as for 'post to see what I'm running as' what do you mean?
Sent from my SCH-I535 using xda premium

Lrs121 said:
Was definitely gonna make a nandroid, but as for 'post to see what I'm running as' what do you mean?
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Maybe the build.prop?
Edit: Attach it via Pastebin!

SlimSnoopOS said:
Maybe the build.prop?
Edit: Attach it via Pastebin!
Click to expand...
Click to collapse
Here ya go. Have fun http://pastebin.com/eUj5z2VT
Sent from my SCH-I535 using xda premium

Lrs121 said:
Here ya go. Have fun http://pastebin.com/eUj5z2VT
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Looks like us cellular under the ultimobile ID?
Sent from my SCH-I535 using Tapatalk 2

Addiso said:
Looks like us cellular under the ultimobile ID?
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
It's weird though right? I'm not sure how to go about suggesting how to flash roms. I have to side with prdog1 and say it's a VZW GSIII running USC. I really can't suggest a good way to proceed since it's hard to tell what you would use to revert back to stock in case of emergences.
Anyone familiar with Team US Cellular? Any input from there?

Addiso said:
Looks like us cellular under the ultimobile ID?
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
thats what i saw too. the difficult thing to figure out is if to use the verizon unlock and root or the us cellular model. it is most definately a verizon model of phone just loaded up with us cell software. ive flashed verizon a based rom over a locked down motorola peice of fail, but that couldnt touch the kernel, base band, or anything but the system with out it requiring a complete reflash to stock. i dont exactly have that option if every thing screws up in the process of gaining root. id have to take it into the store and wait till they can reflash it there.

Lrs121 said:
thats what i saw too. the difficult thing to figure out is if to use the verizon unlock and root or the us cellular model. it is most definately a verizon model of phone just loaded up with us cell software. ive flashed verizon a based rom over a locked down motorola peice of fail, but that couldnt touch the kernel, base band, or anything but the system with out it requiring a complete reflash to stock. i dont exactly have that option if every thing screws up in the process of gaining root. id have to take it into the store and wait till they can reflash it there.
Click to expand...
Click to collapse
I'm fairly certain you should use the unified toolkit to root and maybe unroot. In your build.prop, I noticed it reads on the fifth line:
ro.build.version.incremental=R530UVXALK5
Click to expand...
Click to collapse
and the toolkit supports LK5 build for the d2usc. I think they're both locked down the same but on Team US Cellular's website that's what I'm seeing some people have used too. Idk about your specific case using another carrier but a d2usc GSIII but I'm thinking that's a start. Idk about returning to stock though.
Edit: Gonna add this, this means there is an Odin flashable of LK5 available somewhere.
Edit x2: POW!

SlimSnoopOS said:
I'm fairly certain you should use the unified toolkit to root and maybe unroot. In your build.prop, I noticed it reads on the fifth line:
and the toolkit supports LK5 build for the d2usc. I think they're both locked down the same but on Team US Cellular's website that's what I'm seeing some people have used too. Idk about your specific case using another carrier but a d2usc GSIII but I'm thinking that's a start. Idk about returning to stock though.
Edit: Gonna add this, this means there is an Odin flashable of LK5 available somewhere.
Edit x2: POW!
Click to expand...
Click to collapse
really i need to gain fastboot access to the phone. there are some files i need to check and i need to pull the special recovery that came with the phone. if i can do that i should be able to pull what i need from the phone to be able to return to stock. im also gonna perform an nvback up, a qpst backup and the synergy back up. but first things first i need fastboot access to the phone. i know how to get into recovery and download mode but for the life of me i cant figure out how to get to a fastboot compliant mode. from there i can figure how im gonna proceed to root.
edit: what i see in download mode
odin mode
Product name: sch--i535
custom binary download: yes (1 counts)
current binary: custom
system status: custom
Qualcom secureboot: enable

Lrs121 said:
really i need to gain fastboot access to the phone. there are some files i need to check and i need to pull the special recovery that came with the phone. if i can do that i should be able to pull what i need from the phone to be able to return to stock. im also gonna perform an nvback up, a qpst backup and the synergy back up. but first things first i need fastboot access to the phone. i know how to get into recovery and download mode but for the life of me i cant figure out how to get to a fastboot compliant mode. from there i can figure how im gonna proceed to root.
edit: what i see in download mode
odin mode
Product name: sch--i535
custom binary download: yes (1 counts)
current binary: custom
system status: custom
Qualcom secureboot: enable
Click to expand...
Click to collapse
Here's a left field suggestion, could you call this UltiMobile company and ask about what they used?

SlimSnoopOS said:
Here's a left field suggestion, could you call this UltiMobile company and ask about what they used?
Click to expand...
Click to collapse
havent done that yet. its on a list of things to do the problem is that everywhere they put information out they say to contact the carrier not them for everything. i may just have to wait till the phone isnt so new at my carrier and let the IT department play around with it for a while. i can then get information from them.

Lrs121 said:
havent done that yet. its on a list of things to do the problem is that everywhere they put information out they say to contact the carrier not them for everything. i may just have to wait till the phone isnt so new at my carrier and let the IT department play around with it for a while. i can then get information from them.
Click to expand...
Click to collapse
That's real tricky but sounds like your best option. At least you're rooted and unlocked with the VRALE6 bootloader and can debloat. Out of curiosity, what recovery are you using that has all these options?
As an aside, this table tells you where the recovery partition is. I've heard of people using dd commands to pull whatever partition they want to their sdcard but idk how viable an option this is in terms of pushing a recovery to that partition. I'm not recommending you try it either.

SlimSnoopOS said:
That's real tricky but sounds like your best option. At least you're rooted and unlocked with the VRALE6 bootloader and can debloat. Out of curiosity, what recovery are you using that has all these options?
As an aside, this table tells you where the recovery partition is. I've heard of people using dd commands to pull whatever partition they want to their sdcard but idk how viable an option this is in terms of pushing a recovery to that partition. I'm not recommending you try it either.
Click to expand...
Click to collapse
The vrale6 is unlocked? If so then why does it say that the qualcom secure boot is enabled. And I haven't rooted just yet but am working on it. Its a recovery built by ultimobile.
Sent from my Nexus 7 using XDA Premium HD app

Lrs121 said:
The vrale6 is unlocked? If so then why does it say that the qualcom secure boot is enabled. And I haven't rooted just yet but am working on it. Its a recovery built by ultimobile.
Sent from my Nexus 7 using XDA Premium HD app
Click to expand...
Click to collapse
Yes indeed. VRALE6 is the prerelease bootloader that was leaked which EVERY d2vzw (d2usc I suppose too) uses in order to allow flashing of roms/kernels. It's a little weird to explain but basically everyone's Download Mode reads almost the same. Mine reads "custom binary: Samsung Official" though and I'm rooted/unlocked. Idk the technical or even the proper way to explain it but the unlocked VRALE6 bootloader has no bearing on what Download mode says. Although your custom binary should be at 0 if/when you do warranty exchanges.

SlimSnoopOS said:
Yes indeed. VRALE6 is the prerelease bootloader that was leaked which EVERY d2vzw (d2usc I suppose too) uses in order to allow flashing of roms/kernels. It's a little weird to explain but basically everyone's Download Mode reads almost the same. Mine reads "custom binary: Samsung Official" though and I'm rooted/unlocked. Idk the technical or even the proper way to explain it but the unlocked VRALE6 bootloader has no bearing on what Download mode says. Although your custom binary should be at 0 if/when you do warranty exchanges.
Click to expand...
Click to collapse
Ah makes sense now it just doesn't do a hash/encryption check. I've dealt with a lot of bootloader stuff with my old phone. the phone came like that with the count at 1. Was like that before I tried anything. Probably was triggered when the d2usc stock was flashed onto it. Which probably means I should stick with d2usc builds to ensure compatibility with connecting with my carrier.
Sent from my Nexus 7 using XDA Premium HD app

[HOW-TO] UNLOCK I337 ( UCUAMF3 - 100% checked and working) ** Updated **

First root your device.
- There are many ways to root. But i used this.
Then install RegionLockAway-v1.3.apk. ( This app needs root access )
After that remove region lock with RegionLockAway application..
I just found the way. Please thanks to original authors.
** Checked with 4 i337 devices.. All unlocked perfectly..
If you are on mk2 lease try this..
Thank you

Just tried with an MF3 SGH-I337. The app said it looks like the unlock was successful, then I rebooted with a T-Mobile sim inserted.
It never asked for an unlock code upon boot with the new sim... Thought that was a good sign...
I have full bars of service signal from T-Mobile, but no data. Checked APN settings, and the phone pulled the correct settings from the network, but won't connect to data, even edge.
Tried to make a call, emergency calls only prompt comes up. Only option is to click OK.
Did I do everything right?
Sent from my SAMSUNG-SGH-I337 using Tapatalk

I can confirmed this is work...... awesome... phone work in or out ......mms work. ....:thumbup:
SWYPED_FROM_S4_MF3_REDVENOM

I got service from T-Mobile, but couldn't make calls. Does gsm and data work for you?
Sent from my SAMSUNG-SGH-I337 using Tapatalk

Man... Any idea why I get this error?
Sent from my SGH-I337 using xda app-developers app

Please make it work with MK2 :laugh:

HORiZUN said:
Just tried with an MF3 SGH-I337. The app said it looks like the unlock was successful, then I rebooted with a T-Mobile sim inserted.
It never asked for an unlock code upon boot with the new sim... Thought that was a good sign...
I have full bars of service signal from T-Mobile, but no data. Checked APN settings, and the phone pulled the correct settings from the network, but won't connect to data, even edge.
Tried to make a call, emergency calls only prompt comes up. Only option is to click OK.
Did I do everything right?
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Click to expand...
Click to collapse
Hi,
How did you root it?
Thanks

are you in custom rom?

Worked fine on my mk2 phone!

lostprophet5921 said:
Worked fine on my mk2 phone!
Click to expand...
Click to collapse
Are you sure it works with MK2?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

Amelia2006 said:
Are you sure it works with MK2?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
Not sure how to verify, but the app have a success message after running the patch and my LTE is running fine.

bqudamith said:
Hi,
How did you root it?
Thanks
Click to expand...
Click to collapse
Rooted with SafeRoot. Stock MF3 ROM.
Sent from my SAMSUNG-SGH-I337 using Tapatalk

lostprophet5921 said:
Not sure how to verify, but the app have a success message after running the patch and my LTE is running fine.
Click to expand...
Click to collapse
Please make sure you know what you are typing. The title is for MF3 and you said it works on MK2. If it is not true and other people try it, it might brick the phone.

Yeah, tried in my Canada Telus MK6, same result like yours, not working
HORiZUN said:
Just tried with an MF3 SGH-I337. The app said it looks like the unlock was successful, then I rebooted with a T-Mobile sim inserted.
It never asked for an unlock code upon boot with the new sim... Thought that was a good sign...
I have full bars of service signal from T-Mobile, but no data. Checked APN settings, and the phone pulled the correct settings from the network, but won't connect to data, even edge.
Tried to make a call, emergency calls only prompt comes up. Only option is to click OK.
Did I do everything right?
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Click to expand...
Click to collapse

Amelia2006 said:
Please make sure you know what you are typing. The title is for MF3 and you said it works on MK2. If it is not true and other people try it, it might brick the phone.
Click to expand...
Click to collapse
I know my phone is running on MK2, it took a lot of work to odin to stock MF3, re-root, and upgrade. I know i ran the apk in the first post of this thread and it gave a success message and my LTE is working fine. I don't have a sim card to test the unlock with. I'm not trolling - trying to get people bricked. If you are worried, don't take my word for it - don't run the patch - I don't care.

lostprophet5921 said:
Not sure how to verify, but the app have a success message after running the patch and my LTE is running fine.
Click to expand...
Click to collapse
lostprophet5921 said:
I know my phone is running on MK2, it took a lot of work to odin to stock MF3, re-root, and upgrade. I know i ran the apk in the first post of this thread and it gave a success message and my LTE is working fine. I don't have a sim card to test the unlock with. I'm not trolling - trying to get people bricked. If you are worried, don't take my word for it - don't run the patch - I don't care.
Click to expand...
Click to collapse
Sorry did not mean you intend to mislead people and glad you have MK2 unlocked.
Seriously, if you get MK2 unlocked, can you provide detailed info? Or you should start a new thread. I believe you are the 1st to get it done!

HORiZUN said:
Rooted with SafeRoot. Stock MF3 ROM.
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Click to expand...
Click to collapse
Please flash Stock MF3 ROM and reroot with Kingo Android ROOT app.
I tried this on 3 devices. All works perfectly.
Thanks

If I flash back to stock, root with kingo, unlock with this tool, and reflash back to stock does the unlock stay? I don't trust kingo...
Sent from my SAMSUNG-SGH-I337 using Tapatalk

thanks all worked good unlocked a atat s4 4.2.2 (mf3)
Now using on tmobile getting full LTE
very easy to use, just use kingo roof and install regionlockaway and your good to go

I'm reading that jortex's root also works for this unlock. I'll test this tonight. Kingo hasn't earned my trust without releasing their source code.
Edit: Removed root previously applied via SafeRoot. Re-rooted with jortex's method. Ran region lock away. Rebooted with T-Mobile sim inserted. Emergency calls only prompt. Stock MF3 ROM. Too bad. I'm not restoring to complete stock with odin just yet. Maybe some other time.
Sent from my SAMSUNG-SGH-I337 using Tapatalk

[GUIDE] Straight Talk Galaxy S4 (S975L) running AT&T towers Guide and Info

If you are using the Straight Talk Galaxy S4 with build number
JSS15J.S975LUDUANB1 and just want root and simple recovery
You can root using towelroot.
SuperSU will also deactivate Knox.
Safestrap version 3.72 works for getting a proper recovery installed with the option at boot for system or recovery. Note that it will say safestrap is disabled but will still allow your choice to boot into recovery.
Make a backup in recovery as soon as you can.
Or if you want awesomeness!! Do THIS!!
Here is the definitive guide for those wondering what to do that will work and be stable and AWESOME!
From the beginning:
1.Root with towelroot (search) AND install SuperSU from the play store.
2.Install the latest recovery from here using the DD method listed directions from the TWRP site. This is from T-Mobile and works! http://forum.xda-developers.com/showthread.php?t=2263001
MAKE A BACKUP!!! DO IT! No more messing around with Safestrap and the bitter warnings!
To get into recovery hold "home+volume up" during boot. Whoooo!!!!
3. Install the Lollipop gpe ROM from here: http://forum.xda-developers.com/showthread.php?t=2539361
This uses the aroma installer and works well.
You may, or may not have to input *#6463*# into dialpad to change settings to LTE etc.. This adjustment may alsobe in the ROM settings!
4. Optional - install the googy kernel
I like this kernel better though there isn't a huge difference from the hulk kernel. Make sure to install the GE edition 1.3.0. NOT TOUCHWHIZ! : http://forum.xda-developers.com/showthread.php?t=2741181
ENJOY!

sleekmason said:
Moderator, please move to relevant forum or incorporate into the general info thread if this isn't the right place.
If you are using the Straight Talk Galaxy S4 with build number
JSS15J.S975LUDUANB1,
You can root using towelroot.
SuperSU will also deactivate Knox.
Safestrap version 3.72 works for getting a proper recovery installed with the option at boot for system or recovery. Note that it will say safestrap is disabled but will still allow your choice to boot into recovery.
Make a backup in recovery as soon as you can.
The zip to allow tethering WILL NOT work, and you will be stuck on the Samsung logo.
Xposed works well, but do not use the option in gravity box to add the recovery option to your power menu or your device will freeze upon pressing the power button.
Greenify works well.
Advise against ROM installation, as well as initial upgrade. You will lose app to SD ability if you upgrade.
The boot loader is not unlocked, so no cool kernels here
Click to expand...
Click to collapse
I was able to use towelroot and my att s4 is running on the att towers with straight talk.

mrphotoman said:
I was able to use towelroot and my att s4 is running on the att towers with straight talk.
Click to expand...
Click to collapse
Have you downloaded safestrap? Or tried anything with Xposed?

sleekmason said:
Have you downloaded safestrap? Or tried anything with Xposed?
Click to expand...
Click to collapse
No not yet, I just got the phone so I haven't done a lot to it yet. I was able to get tethering working and it was pretty easy and I got a nice extended battery case for it yesterday that I love. Other than that I haven't had time to do a lot else to it.

mrphotoman said:
No not yet, I just got the phone so I haven't done a lot to it yet. I was able to get tethering working and it was pretty easy and I got a nice extended battery case for it yesterday that I love. Other than that I haven't had time to do a lot else to it.
Click to expand...
Click to collapse
Can you tell me what you did for tethering? I tried once but was unable to get it to work.

sleekmason said:
Can you tell me what you did for tethering? I tried once but was unable to get it to work.
Click to expand...
Click to collapse
sure, i have a how to vid but i am waiting on the mod to approve it so i can post it. it definately works on the newest updated att phone

mrphotoman said:
sure, i have a how to vid but i am waiting on the mod to approve it so i can post it. it definately works on the newest updated att phone
Click to expand...
Click to collapse
Excellent! Please post a link to it here as well when you get it uploaded

Updated
See first post

I used tmo twrp. Flashed tmo and att roms. I also have the Odin file. I am not sure but I am on the s975L which I thought was att not sure but pretty sure. However it also says i337 underbattery ...I've tried more tmo roms than anything. No safestrap but I might try that later. Seems we don't have locked bootloader. This is great. However unlock is next for me. Having a blast hacking the hell out of it. So far I have had no issues. Again I'm not new to this. Lol. It's an addiction. I have sprint note 4 as my DD. So this is my fix. Lmao.
Sent from my SM-N910P using XDA Free mobile app

Droid2drummer said:
I used tmo twrp. Flashed tmo and att roms. I also have the Odin file. I am not sure but I am on the s975L which I thought was att not sure but pretty sure. However it also says i337 underbattery ...I've tried more tmo roms than anything. No safestrap but I might try that later. Seems we don't have locked bootloader. This is great. However unlock is next for me. Having a blast hacking the hell out of it. So far I have had no issues. Again I'm not new to this. Lol. It's an addiction. I have sprint note 4 as my DD. So this is my fix. Lmao.
Sent from my SM-N910P using XDA Free mobile app
Click to expand...
Click to collapse
As far as I know, the bootloader IS locked, but can be bypassed using Loki to patch kernels for custom roms. Glad to see somebody else on this phone

sleekmason said:
As far as I know, the bootloader IS locked, but can be bypassed using Loki to patch kernels for custom roms. Glad to see somebody else on this phone
Click to expand...
Click to collapse
That's strange. If it was locked I wonder how I've used tmo twrp no loki or SS and flashed tons of roms so far...I just odined back from a modem issue. But rerooted now off to get some modems etc...boot and all. I'll keep reporting. Thank you bro. I maintain many devices and carriers and am about to start a channel on YouTube. I do music writing now with keyboard. Now I'm just getting a hand on s4 straight talk and will make a list of all working roms.
Sent from my SM-S975L using XDA Free mobile app

Droid2drummer said:
That's strange. If it was locked I wonder how I've used tmo twrp no loki or SS and flashed tons of roms so far...I just odined back from a modem issue. But rerooted now off to get some modems etc...boot and all. I'll keep reporting. Thank you bro. I maintain many devices and carriers and am about to start a channel on YouTube. I do music writing now with keyboard. Now I'm just getting a hand on s4 straight talk and will make a list of all working roms.
Sent from my SM-S975L using XDA Free mobile app
Click to expand...
Click to collapse
True.. I don't know as much about it as I like. I just wasn't able to use fastboot or "unlock" using fastboot.
If you are working with the modems let me know how that goes, and maybe you can help with an issue I'm having? My GPS won't work after trying a ROM with safestrap. What I've posted here is a result of trying to fix it. I consistently show NO satellites. I consulted the local phone fixers to no avail. I was wondering if it could be related to a modem issue? I think the ROM I first tried did something deep to my phone, though Phone Info showed at the time everything to be original concerning baseband etc.. And a factory reset didn't help.
I'm at the point now of thinking its hardware rather than software but the coincidence to trying the ROM was too high.

Hey everyone!
I am working with this phone and am trying to get a backup modem, can you please ,make a suggestion?
Also are there any ROMs that allow easy access to umts menu through servicemenu? I know the base firmware cripples this and I'm trying to get a work around!
thanks in advanced!

[GUIDE] New Quick, Easy, Free NB1 SIM Unlock - Master Method

Background
I found my AT&T Samsung Galaxy S4 in a hotel room I was staying in. It was just my luck, too, considering my S2 on T-Mobile had just undergone it's own death due to the screen not working, and I didn't have the cash to buy another phone. So my plan was to SIM unlock my new (kind of!) S4 and use it on my T-Mobile plan, with my T-Mobile SIM card. I had already factory reset the thing, rooted it (Towelroot + SuperSU) and installed Safestrap. I also found out it was on NB1, which, after a lot of research, meant I couldn't do the things some other users could because of the locked bootloader.
After my stay at the hotel was over, I went home. I tried the following methods to unlock it, but none would work. Here are the methods and their respective errors. These are all designed for the I337 (our phone) and some even explicitly say they'll work on NB1, but they obviously didn't.
http://forum.xda-developers.com/showthread.php?t=2282683
Pressing *#0011# worked, but following the instructions, nothing changed, and it would stay on the first screen.
http://forum.xda-developers.com/showthread.php?t=2514607
I had rooted with Towelroot, installed SuperSU, and then tried RegionLock Away. It said it was successful, but my SIM was still invalid.
http://www.droidviews.com/how-to-sim-unlock-t-mobile-att-galaxy-s4-sgh-m919-sgh-i337/
Apparently, you need an AT&T SIM for the *#267, etc. code to work. I didn't have one, so it didn't launch the ServiceMode menu.
Then, I read something on XDA about the ServiceMode menu working properly after installing MF3 modems, so I flashed the MF3 modems via Safestrap, and tried the codes again, but they didn't work. Having lost all hope, I almost went to buy an unlock code. But I didn't. Because I'm stubborn. So, instead, I decided to try RegionLock one more time, and voila, it worked. I'm pretty sure it was the MF3 modem that caused it to work, but I'm going to list out every step I took for this to work, just in case.
TL;DR: If you want to SIM unlock your AT&T Samsung Galaxy S4, but the codes nor RegionLock has been working for you, you don't have an AT&T SIM card *AND* you're on NB1, this should work for you. This should also probably work on MK2 and NC1.
I am not to be held responsible if you mess up your precious S4 during the course of this guide in any way.
Also, all of the files needed (all of them) are available at the bottom.
HOW TO SIM UNLOCK YOUR NB1 GALAXY S4 IF ALL ELSE FAILS
**MAKE SURE THERE IS NO SIM CARD WHATSOEVER IN YOUR PHONE UNTIL SAID TO PUT ONE IN**
1.) Install stock NB1
For this guide, we obviously need *stock* NB1 on our S4. Either backup and do a full factory reset if you're already on it, or flash NB1 via Odin. I'm not going to show you step by step how to flash NB1 via Odin onto your Galaxy S4, so I'll link to a guide if you need it.
http://forum.xda-developers.com/showthread.php?t=2663545
2.) Root your S4
Now we need to root our Galaxy S4. Go into Settings, click on the 'More' tab, and then click on 'Security'. Now, change the security level to 'Normal' and check 'Unknown Sources'. Exit out of Settings. Now, download the two included files, one is Towelroot, and the other is SuperSU. Install Towelroot (click on it in the Notification bar, or in the Downloads app), and after it's installed, open it and click 'make it ra1n'. If your phone didn't reboot, you're good to go. You can exit Towelroot now. Next, download, install, and run SuperSU. It's also included at the bottom. Click 'Normal Mode' when it asks how you want to update the binary. When that's done, it will ask you if you want to disable KNOX. Click yes, and it should say KNOX is disabled. Now you can reboot your phone. If it keeps trying to disable KNOX for more than a couple of minutes, reboot your phone. After you've rebooted it, open SuperSU again regardless of whether or not KNOX was disabled. Click yes if it asks you to disable KNOX again, and it should work this time.
3.) Installing Safestrap
Us NB1 users aren't so lucky- we still have a locked bootloader. That means we can't install normal recoveries like CWM or TWRP. However, we can install Safestrap. From the bottom, download the included Safestrap APK and install it. Open it, click 'Install' and grant it root access. Let it finish, and if you are now able to click the 'Reboot' option below 'Uninstall', it worked. Don't reboot.
NOTE: If the 'Reboot' option is still greyed out after you 'Install' Safestrap, that means it didn't install. DO NOT PANIC! There is a very quick fix to this. Simply go to the Play Store and download 'SELinux Mode Changer'. After it's installed, open it, grant it root access, and change the mode to 'Permissive'. Now, open Safestrap again, click 'Install', and after it's finished, the option to reboot should be available. That means it worked.
4.) Let's talk about MF3, baby!
Download the included MF3 Modules ZIP file from the link down below. The ZIP was too big to attach to this post. Now turn off your device. Boot it back up, and you should see a screen with a little robot. Press the menu key under 'Recovery' to boot into Safestrap. Now, click 'Install' in Safestrap, and navigate to your Downloads folder, where the MF3 Modules ZIP file is located. Select it, and install it. Now, reboot to 'System'. When you see the robot screen again, press the back key under 'System' to boot into Android.
http://d-h.st/ReU
5.) Installing RegionLock Away
Now, we have to install and flash RegionLock Away. It was originally created to remove region locks on the Note 3, but various S4 users reported it to SIM unlock their phone, and after following the steps above, it will SIM unlock your S4 as well! Download the included RegionLock Away APK from below, install it, and click 'Remove Region Lock' (I believe that's what the button says). Grant it root access, and when it asks you to reboot, accept it.
6.) This is the best part...
We get to sit and wait. Once your phone boots up again, unlock it and go to the dialer. Type *#0011# (this isn't what you think it is) and wait until ServiceMode pops up (it should take a while). Once it pops up, wait at least 60 seconds and then remove your battery. Now, put your alternative (non-AT&T) SIM card in it. Put your battery back in, put your back on again, and turn your phone on.
7.) No, THIS is the best part!
Tired of that 'Invalid SIM card', or 'No SIM card' error? So was I. Well, a weight has just been lifted off of your shoulders. Once you unlock your device (on the lock screen, not the SIM- that's what we've just done!), you shouldn't see one of those anymore. Instead, if you're using, say, a T-Mobile SIM, you should see T-Mobile on the status bar after a couple of seconds. Try texting someone, calling someone, using the internet. Another bonus is that the APNs should be preconfigured, so now it'll work out of the box.
8.) No, no, no... We're not done yet!
Now, we need to re-flash the NB1 modems. You don't have to, but it's recommended. On your device, download the NB1 Modules ZIP that is provided below and then reboot into your device, and once you're on the Robot screen, click the menu button under 'Recovery'. Now click Install, and navigate to the Downloads folder where your NB1 Modules ZIP should be and install it. Reboot into System now, and when you're at the Robot screen again, click the back key under 'System'. Nothing should change when Android boots up. Your SIM unlock should still work, and your apps, etc. should be just how you left them.
http://d-h.st/4p8
Now we're done. Feels nice, doesn't it?
BUT WAIT, THERE'S MORE!
You don't have to stay on the stock ROM anymore! You can flash any Safestrap ROM from the link below and still have SIM unlock! And, if/when the NB1 bootloader gets an unlock and you can finally install recoveries other than Safestrap, you will also be able to install ROMs other than Safestrap ready ones! Now, here's a link on how to install Safestrap ROMs, as well as a list of them. Be careful not to install ROMs for other carriers- only install ones for the i9500, i337, ATT, or if they say NB1. There is a guide hanging around here somewhere for installing ROMs from other carriers, however. But again, I'm too lazy to put that one up for you.
http://forum.xda-developers.com/showthread.php?t=2616221
Now, NOW we're really done.
This whole process shouldn't have taken more than half an hour, and if you were already on NB1, you shouldn't have even needed to touch a computer. This whole process gave you an unlocked NB1 S4 in half an hour, using nothing but this guide and your common sense.
Remember, hit thanks, reply if you've tried it, or if there's a problem with this guide.
Also, I'm new to (posting on) XDA and the S4 area in general, so go easy on me.

Any one tried this on NC1 and got it to unlock their S4?

Yeah it will work. 90℅ sure. I upgraded to NC1 after using my method and it still was unlocked. No worries.
Sent from my GT-I9505G using XDA Free mobile app.

Cool. Ill try later after church. Will update.
Also can you tell me where I can get the NC1 modules? Or its ok to use the NB1 module in your link?

Dude... No way. I just got out of church not even 10 minutes ago.
Sent from my GT-I9505G using XDA Free mobile app

Awesome write up. Unlocking went smoothly. Much thanks bro.
Is it ok to reset the phone to get rid of all the stuff I installed? Will the unlock stick? Reason is I'd like to sell it.

merikgvr4 said:
Awesome write up. Unlocking went smoothly. Much thanks bro.
Is it ok to reset the phone to get rid of all the stuff I installed? Will the unlock stick? Reason is I'd like to sell it.
Click to expand...
Click to collapse
Yeah, it'll stick. I've been through a couple of Safestrap ROMs, soft bricking my device at least 3 times (while developing a ROM) and having to do Odin stock flashes, and it's stayed. So it'll stay, yeah.

Hi GM. Read up on going back to nc1. Post 5 on all things thread has an update zip for flashing nb1 to nc1. I'd like to ask if I can use safestrap for this.
For going back to stock, is it ok to use the factory data reset or will I have to use odin?
Thanks again for all the help.

Hey, sorry I can't answer that right now. I'm at Dairy Queen. I needed a break, lol. Give me an hour and I'll get back to you.
Sent from my SAMSUNG-SGH-I337 using XDA Free mobile app

Take your time bro. Im gonna try your rom also and see if I like it better than stock.

Alright, sweet! Also, I should have an Android L ROM out today or tomorrow. Not legit Android L, just 4.4.4 with as much as I can take from L as possible.
Sent from my SAMSUNG-SGH-I337 using XDA Free mobile app

Running your rom. Smooth. How can I flash back to NC1 baseband?

Like someone asked, if I downgrade to NB1 (I'm on NE1), after the whole process will I be able to go back to stock and be able to receive future OTA? I'll also like to sell it so if the client can't upgrade it afterwards then it's not good for them.
thanks

stoned99 said:
Like someone asked, if I downgrade to NB1 (I'm on NE1), after the whole process will I be able to go back to stock and be able to receive future OTA? I'll also like to sell it so if the client can't upgrade it afterwards then it's not good for them.
thanks
Click to expand...
Click to collapse
Yeah. The unlock doesn't affect any of that- the unlock is permanent.

This Works
I just spent the last 35 minutes doing all the steps listed above. Confirmed working.
I was on AT&T I337UCUFNC1; MDF v1.0 release 2.
Just put in my T-Mobile SIM and it worked.
A BIG THANK YOU!!!!!!!!!!!!!!!!!!
:victory:
:victory:
:victory:

GalaxyMasterI337 said:
Background
I found my AT&T Samsung Galaxy S4 in a hotel room I was staying in. It was just my luck, too, considering my S2 on T-Mobile had just undergone it's own death due to the screen not working, and I didn't have the cash to buy another phone.
After my stay at the hotel was over, I went home.
Click to expand...
Click to collapse
Question:
Did you try returning your found "new" phone to it's rightful owner who paid for it and might have forgot it there OR assumed your ownership.
Just curious...

urtruelove78 said:
Question:
Did you try returning your found "new" phone to it's rightful owner who paid for it and might have forgot it there OR assumed your ownership.
Just curious...
Click to expand...
Click to collapse
I figured it was stolen. It was hidden in the back corner on top of a shelf about a foot above my head, and when I opened the back there was no SIM card or SD card. I did in fact assume ownership, lol. There's not much you can do without a SIM card.

I'm pretty sure calling this unlock permanent is a little overstated. While I appreciate your effort for the guide, I've been using this region lock thing almost since it dropped and an Odin back to stock reverses it for me, every time.
Just fyi!
Also can't speak for your state, but in most states you have possesion of stolen property ( if a reasonable person would have believed it was stolen) or possibly theft of lost or mislaid goods to consider. Again just fyi!
Thanks again, good to see people contributing.
Sent from my i337 on T-Mobile that's getting awesome LTE speeds.

I hope this is the right place but is there anyway to get this working while running GPE ROM?

This might work on it. It wouldn't hurt to try!
Sent from my GT-I9505G using XDA Free mobile app