When I am trying to check my voicemail and it asks me to enter my password, I click the dialpad button and then try to enter my password... for some strange reason after i get the first two numbers entered the screen shuts off and then i have to hit the power button to turn it back on and by that time it messes up my password entry. This has happened everytime I check my voicemail so I'm not sure what's going on... I think it has to do with the screen turning itself off when you hold the phone a certain way (up to your ear). Has anyone else experienced this issue or have a fix for the problem? So far I've just tried to enter my password super fast before it shuts the screen off, but it usually shuts off before I get it entered and I have to try it several times in a row. Very frustrating.