After joining AT&T for my iPhone and switching from Alltel. My hatred of Alltel grew. Since I started my plan with Alltel they have been ripping me off left and right. After looking through AT&T's plans before making my iPhone purchase, I noticed the Unlimited calling plan. Shortly after I saw a commercial where Alltel is trying to sell Unlimited calling while bashing AT&T's unlimited plan. Alltel really has no right to do so, their plan is completely different from AT&T's. AT&T offers Unlimited calling to an unlimited amount of numbers. While Alltel is just trying to pass their "my circle" plans as unlimited calling, when really you only have unlimited number to up to 20 numbers. Alltel is a terrible phone company with not so impeccable coverage, crappy phones, and terrible customer service. Much better off with AT&T or Verizon. I'm actually very happy with AT&T's service on my new iPhone 3G. How have your experiences been with your cell phone providers.