Hi, I have 64gb model. This has happened to me 3 time in the past 2 days. I'll be on LTE and try to go to a website. The browser doesn't respond, and I see the spinning circle. I tried turning LTE off, and the same issue persists on 4G. Reenabling LTE doesn't work. The only way to get data to work is to reboot the phone. I don't know if this is a phone issue or AT&T issue. Does anyone else have this issue?