had mine for about 2 weeks now, and I've had a 2G for the past year on MTN. I have to say that all the call dropping and call failure issues i had in the past have disappeared. Yesterday was the first time I had major issues though, dropped a call about 7 times in 10 mins (very annoying). Also, the phone seems to get a bit confused when switching from EDGE to 3G which sometimes results in a "No service" message, but fixes itself after a few seconds.