This iPhone user reports dropped calls and decides to leave AT&T after 12 years:

Bought the 1st gen I phone and right away noticed dropped calls. So frequently that it is frankly a joke. This is hands down the worst phone I have ever owned. If good business is to overcharge initially, release a cheap operating phone in an otherwise good design(remember its first function is a phone), then ignore every attempt the customer makes to retify the problem. NOT ONE REPLY. Nonsense!!!! This will be the last Apple product I ever purchase. And we are leaving ATT after 12 years. This behavior will eventually catch up. No company last when problems are not resolved.