Okay, so I am really new at this forum stuff. I just took over my daughters vivid from my inspire. I have had it a couple of days now. So far everything was working fine until today. It will not connect to mobile internet, which is at&t. It will connect to wifi. It keeps telling me "connection failed due to incorrect APN setting". I talked to att support and they want me to do a master reset. That scares me because I don't want to lose EVERYTHING. Does anyone have any other ideas ? If I do have to do master reset can I save pictures and music, etc to sd card and be okay for the reset ? Need help here, TY 
