I've had the phone for a month and the beginning was rocky but now that i've figured it out I'm very happy. Call quality is excellent. The only problem I had was with the SIM chip that refused to stay put, but once I fixed that it's been perfect. The ring tones are not optimal, my old samsung N200 was much louder and clear with regards to ringing, but right now, my only big complaint. Other little things, you can't put multiple phone numbers under one name in the phone book. The voicemail was a little confusing. But T-mobiles plans can't be beat and the phoen was free, so what can I say!