I would give it a five if it had a speaker phone! The call quality is amazing...much better than my nokia. The calendar feature could be better as well as the battery life but I'm still breaking it in. I've had this phone for two weeks (AT&T) and so far I love it. I even convinced my boss to switch phones.I would recommend getting a data cable to go along with the phone, though. It saves you time and trouble entering in dates and phone numbers. Overall an excellent buy.