I have a US Cellular Galaxy S3 SCH-R530U 4.3.1 ROOTED.
I already have a Straight Talk SIM Card in it, however it has no service hooked up. None of the hidden codes to unlock my SIM is working on 4.3.1 and they just keep saying No Network Found
I've read that i can somehow flash my phone to get it to work with Straight Talk but i dont know how? I know it can work.
I just need to basically unlock my SIM so that it can work on Straight Talks network.