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how can I sim unlock Cricket Galaxy S4 (SCH-R970C) or flash other gsm network

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raclimja
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Default how can I sim unlock Cricket Galaxy S4 (SCH-R970C) or flash other gsm network

I have a Cricket Galaxy S4 (SCH-R970C) with baseband version R970CVVUAMI3

I tried to sim unlock my phone through this method http://forum.xda-developers.com/show....php?t=2283068.

I did follow all the steps but when I insert another sim (T-mobile), I got an "Invalid Sim" pop up message.


I am thinking of trying this method, but I don't know if it is safe to do so.


is there any way to back up my phone(baseband, etc...) just in case everything screwed up during this process?
 
gtpoorman
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Smile do you find the solution

Quote:
Originally Posted by raclimja View Post
I have a Cricket Galaxy S4 (SCH-R970C) with baseband version R970CVVUAMI3

I tried to sim unlock my phone through this method http://forum.xda-developers.com/show....php?t=2283068.

I did follow all the steps but when I insert another sim (T-mobile), I got an "Invalid Sim" pop up message.


I am thinking of trying this method, but I don't know if it is safe to do so.


is there any way to back up my phone(baseband, etc...) just in case everything screwed up during this process?
Hello my friend do you find the solution to use it the SCH-R970C cricket s4 with gsm
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