In all honesty, its pathetic. I get the following, does not matter what phone, on the MTN network:
1. Call dies when moving from a 3G to non 3G tower, only on Nokia though.
2. I frequently get the call cut, then the phone says call not answered message on the phone. In the middle of a long call.
3. I make a call, then hear nothing, and wait. I look at the screen, and the counter is going. I hang up, call again, and they say they could hear me breathe, but to me, no call was made. Of course I pay for that. This happens at least twice a day.
4. Generally shocking signal in a lot of areas, with bad quality voice.
5. Frequently get call not allowed when trying to make a call, then redial straight away and it connects.
I used to have a E70 Nokia, then a Samsung D600, then a Motorola Razr, now a Nokia N95 8GB, and the call problems are on all, so its not the phone.
I have been with MTN for about 8 years, on a Pro Call 600, with Vodacom before that, although their service was shocking, hence the change. Bill averages R1000-R1300.