Recent content by Papote

  1. P

    Network SIM unlock code not working on Samsung Active SGH-i537

    I paid to get an unlock code for my Samsung Galaxy S4 Active SGH-I537 locked to AT&T. I have tried to enter the unlock code given when the phone boots with my other carrier SIM card inserted, but get "Network unlock unsuccessful" error message. I wrote to the company and they responded with the...