A friend has the exact phone I do, says Sprint on top and in the notifications, but says 'unknown' in the phone info under carrier. He want me to root it and put custom recovery and rom on it for him but I wanted to know before I do it, if that will effect his service at all? I'm well schooled on processes and how to do it, but have only done on actual Sprint phones on Sprint network. I believe the carrier is I-Wireless. Anyone done this or know answer, because I would hate to break friends phone. Thanks