I have 4-5 bars of data connection in my home and lately when i try to make a call or go to voicemail, I loose the data connection completely i get the little circle with the line through it showing i have no connection! This started about 2 weeks ago. I don't receive calls either. I got a notification hours later that i missed a call and i cant call my voicemail without it dropping to 0 bars again! I tried all the suggestions offered and nothing works.