My trouble is simple, my phone works great at home, but at school I've had a couple problems. My school is under the coverage map, but my girlfriend said she called me like 3 times and it would ring once and then get a busy signal. Now that's weird because shouldn't it go into voicemail if nothing else? It didn't ring once on my end and sometimes when I try and place calls it says "Call failed." It's frustrating because this phone is amazing when it works. Anybody else have this problem?