Internet Connetion on Mogul

[mugsymd]

I have had my mogul now 6 months. I have never had an internet connection problem. However, my internet connection shuts down after about 2 to 4 hours of not using my email or internet explorer, etc... I thought I was having an IOTA problem - that was NOT the case. Now, I go to the comm manager and I have to toggle the internet connection button off (and yes it is on), then I have to go to explorer, email, etc and then the mogul dials sprint #777 and it works. Does anyone have any clue how to fix this problem - I don't like shutting the device internet connection manager off and then back on - just another extra step.