I've had this iphone for about a year and a half now.. Lately, my iPhone will not let me use Safari, send photos, use iMessage, etc. I reset my Network settings multiple times. It will then work for a minute or so, and then kick off again. I can restart my device all I want, and once again, data services will work for about a minute or two and then will not work. I've done just about all the resets in the book on my iPhone, and still no luck. Please help, for I am in need of assistance. I'm one of those who live off iMessage and sending photos with my job, so this is a HUGE problem. Thank you!
Remove and reset SIM. If that doesn't work, get a new SIM from Verizon (it is free from corporate store). If still not working, consider an evaluation by Apple.