Strange problem that I came across. I noticed that I had lost data connectivity in the last couple of days. I tried rebooting a couple of times. I thought through what tech support would probably tell me and I figured they'd want me to do a system reset, so I set about making sure I had everything backed up and the way I had my app groups set up on my home screen, etc. Before I went through with it, I went through looking at settings and I found that my Data Enabled under Mobile Network Settings was unchecked! I checked it and all of a sudden I had 4G again. I've never touched that check box and I don't remember the last time I explored to that menu. Any ideas on how it could have been shut off spontaneously? I thought about my Juice Defender, but it switches them back on when I'm using the phone. I wonder if it's a glitch with Juice Defender? I'll have to contact them. Anyway, I thought I'd see if there were any other ideas.