Database Users

[Q] GS4 for Cricket SIM unlock for international use

I have a galaxy S 4 for Cricket model SCH-R970C. I need to unlock the phone to able to use the SIM slot outside the U.S. I've been able to root the phone and I tried flashing a i9505 ROM thinking that would unlock the use of the SIM with no luck. The baseband modem firmware does not change when I flash a different ROM. There is little to no info out there about the cricket GS4. Is it possible to flash different modem firmware so that the phone can behave as an i9505 model? The hardware is the same... just can't change the modem firmware.
I need this ASAP otherwise I need to find a new phone! I'm not in the US now and calling Cricket is not an option. I tried flashing a different modem firmware using ODIN but it fails. What am I missing?
Any help would be appreciated. I'm willing to "donate" $$ for a solution. Thanks.

wallygator4life said:
I have a galaxy S 4 for Cricket model SCH-R970C. I need to unlock the phone to able to use the SIM slot outside the U.S. I've been able to root the phone and I tried flashing a i9505 ROM thinking that would unlock the use of the SIM with no luck. The baseband modem firmware does not change when I flash a different ROM. There is little to no info out there about the cricket GS4. Is it possible to flash different modem firmware so that the phone can behave as an i9505 model? The hardware is the same... just can't change the modem firmware.
I need this ASAP otherwise I need to find a new phone! I'm not in the US now and calling Cricket is not an option. I tried flashing a different modem firmware using ODIN but it fails. What am I missing?
Any help would be appreciated. I'm willing to "donate" $$ for a solution. Thanks.
Click to expand...
Click to collapse
Hi,
You should not flash a modem that is not meant for your phone.
You are risking a brick if you try it.
Your best bet may be to just buy an unlock code online.
Sent telepathically from my S4

wallygator4life said:
I have a galaxy S 4 for Cricket model SCH-R970C. I need to unlock the phone to able to use the SIM slot outside the U.S. I've been able to root the phone and I tried flashing a i9505 ROM thinking that would unlock the use of the SIM with no luck. The baseband modem firmware does not change when I flash a different ROM. There is little to no info out there about the cricket GS4. Is it possible to flash different modem firmware so that the phone can behave as an i9505 model? The hardware is the same... just can't change the modem firmware.
I need this ASAP otherwise I need to find a new phone! I'm not in the US now and calling Cricket is not an option. I tried flashing a different modem firmware using ODIN but it fails. What am I missing?
Any help would be appreciated. I'm willing to "donate" $$ for a solution. Thanks.
Click to expand...
Click to collapse
Any luck?
I tried the same thing i put t-mobile firmware on it. no luck. I was thinking of changing the baseband version . but im lost...

tonys2teg said:
Any luck?
I tried the same thing i put t-mobile firmware on it. no luck. I was thinking of changing the baseband version . but im lost...
Click to expand...
Click to collapse
No, i gave up on the phone. I don't think it's that easy to change the baseband firmware on the phone. I didn't try buying an unlock code, but that might be the only solution for now - just make sure the unlock code is specifically for the cricket model.

Has any managed unlock it? I need older modems in order to complete. The unlocking please provide me with them if you have.

[Q] Flashing different variants modem

Hi guys i have an M919V s4 and my question is can i flash a different variants say for example 1337M modem file to mine, im trying to flash an old modem so that i can unlock my phone using the *#0011# method. I am rooted and running a custom rom so what do you guys think is it possible? Could i flash another variants modem unlock my phone then flash my carriers rom and keep the unlock?

zee24 said:
Hi guys i have an M919V s4 and my question is can i flash a different variants say for example 1337M modem file to mine, im trying to flash an old modem so that i can unlock my phone using the *#0011# method. I am rooted and running a custom rom so what do you guys think is it possible? Could i flash another variants modem unlock my phone then flash my carriers rom and keep the unlock?
Click to expand...
Click to collapse
I doubt it. It's not made for your model so chances are it won't flash or won't work. Try using RegionLock Away or finding your phone's older firmware on sammobile and extracting the modem with 7zip and ext2explore.

Custom ROMs for SIM unlocked SPH-L720

Hi,
I have recently sim unlocked my SPH-L720 that means my Sprint Galaxy S4 is now working on T-Mobile sim. In order to do this I had to downgrade my baseband to MVC. Earlier I had NAE baseband. I think I read somewhere that I cannot upgrade my baseband version which will revert SIM unlock.
I want to install custom ROMs on my unlocked Sprint mobile now. Can someone please tell me how many custom ROMs can I install on my modified device? I am very much inclined towards installing Carbon Rom but not sure whether it will break away sim unlock feature. Here is the link to the post. http://forum.xda-developers.com/nexus-4/orig-development/rom-carbonrom-kitkat-t2630336
Please guide..

How to use AT&T s4 on international network

Hi guys one of my friends bought a S4 in the US, It's AT&T locked SGH-I337 so can't use it with sim in our country (South Africa)We have two models of S4 here, the I9500&I9505. Was wondering what the right steps is to get the phone working? Must I root the phone and flash custom Rom & kernel or just unlock sim card? I'm not new to Rooting or flashing Roms but haven't fidled with carrier locked phones before. And is it possible to use custom Roms from At&t in other countries thanks in advance [emoji2]
Send from my UNBENDABLE NOTE 3 ?<br/>
Send from my UNBENDABLE NOTE 3 ?

Leonidas300 said:
Hi guys one of my friends bought a S4 in the US, It's AT&T locked SGH-I337 so can't use it with sim in our country (South Africa)We have two models of S4 here, the I9500&I9505. Was wondering what the right steps is to get the phone working? Must I root the phone and flash custom Rom & kernel or just unlock sim card? I'm not new to Rooting or flashing Roms but haven't fidled with carrier locked phones before. And is it possible to use custom Roms from At&t in other countries thanks in advance [emoji2]
Send from my UNBENDABLE NOTE 3 ?<br/>
Send from my UNBENDABLE NOTE 3 ?
Click to expand...
Click to collapse
The Sgh-i337 is basically the same as the gt-i9505 EXCEPT for ATT locking the bootloader on that model.
You CAN Sim unlock it so you can insert your Sim into it. You will have to reach it a bit though. It helps if you know what firmware is installed on the phone. If it is MDB, MDL, or MF3 it would be easier to do I believe. Either way look for the threads about unlocking.
If you have NEWER firmware then there are separate threads for it, and it will more than likely need to be rooted, flash a older modem, then perform the Sim unlock from the menu. If you cannot find the correct post I can help look for it later.
Just reply back with WHAT firmware and Baseband you have installed on the phone and we should be able to help you further.
If you do have MDB or MDL firmware do NOF update it...

RockRatt said:
The Sgh-i337 is basically the same as the gt-i9505 EXCEPT for ATT locking the bootloader on that model.
You CAN Sim unlock it so you can insert your Sim into it. You will have to reach it a bit though. It helps if you know what firmware is installed on the phone. If it is MDB, MDL, or MF3 it would be easier to do I believe. Either way look for the threads about unlocking.
If you have NEWER firmware then there are separate threads for it, and it will more than likely need to be rooted, flash a older modem, then perform the Sim unlock from the menu. If you cannot find the correct post I can help look for it later.
Just reply back with WHAT firmware and Baseband you have installed on the phone and we should be able to help you further.
If you do have MDB or MDL firmware do NOF update it...
Click to expand...
Click to collapse
Thanks for reply ,I have NC1 firmware and I used Method 3 on this guide http://forum.xda-developers.com/showthread.php?t=2595457 .SUCCESS!
Could you recommend a modem I could try other than MF3 as the signal isn't that great ?

Leonidas300 said:
Thanks for reply ,I have NC1 firmware and I used Method 3 on this guide http://forum.xda-developers.com/showthread.php?t=2595457 .SUCCESS!
Could you recommend a modem I could try other than MF3 as the signal isn't that great ?
Click to expand...
Click to collapse
Not sure which would work best for your area. You can download and try any/all of them until you find one that works best. You can switch back and forth with no issues without worries

Another unlock question

I have a Sprint S4 SPL-L720 rooted originally was L720VPUFNG2 modem. flashed Stock L720VPUAMDC I have tried several methods to unlock this phone for T-Mobile US sim with no luck .Has anyone got a proven unlock for my given situation. I'm not running CWM's or Cyonide Hope I can get something current to help me unlock this phone

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