I've had t-mobile for seven years and it doesn't matter what phone I have I always had like dropped calls. I switched to Verizon and haven't had a dropped call ever in the four years I've been with them. I have a 8830. I tried ATT for a year and they were a lil better than T-Mobile. On another note T-Mobile mentioned that when I ended my service with them that I had a deposit that they never gave me, in which I was entitled to receive it back only after a year's service. And they mention this 6yrs later. LOL