I have been having this issue for about 2 days now and it's still happening. I have no data connection until I actually try to use my phone for internet, then magically my 3g connection comes back. I don't get any texts or emails until I check for them manually. It's almost like they are turning off the data until you actually use the phone. It's frustrating, I called them and they said there hasn't been anything wrong with the network in my area, I'm about 50 miles east on NYC.