I have had the Rezound for a couple of months now & have been having this problem for almost as long. The phone will be perfectlyzou fine then all of a sudden it loses it's network connection. The 4G disappears from the screen making the phone useless. I'll be on the phone trying to browse the web or send a text or streaming music then all of a sudden the network connection is gone. It comes back after a few minutes & sometimes will do this several times before it goes back to normal. It won't even switch to 3G. I have called support several times & they have verified that all settings are as they should be. Any ideas on how to fix this short of doing a master reset on the phone??