Hi, I have an strange problem with my Razr Maxx that Verizon cannot fix. I use my phone for conference calls and put the phone on mute when I'm not talking. If I leave it on mute for 10 minutes the phone hangs itself up. Every time! VZ decided I needed a new phone and the new one does the same thing. I get 4G at my home office with great signal strength and never dropped calls. Recently I was in Colorado where I had 3G service and in this area the phone worked fine with no hangups. This appears to be software + 4G related. I cannot get anyone at VZ to take the time to understand the problem They think it's related to the conference line I am on but no one else on the calls (there are many people and we use various conference line services) has the same issue. Can anyone help?