Days before the much anticipated rollout of the iPhone, Apple and AT&T announced Tuesday that service plans for the revolutionary mobile phone would cost between 60 and 100 dollars a month, according to dpa. All three plans will offer unlimited use of the device's internet and e-mail services, with the cheapest plan offering 450 minutes of voice time and the most expensive allowing 1,350 minutes. The rates are in line or better than those for standard mobile phones. The iPhone launches on Friday and triples as a phone, iPod media player and a wireless Web device. The iPhone, Apple's first ever cellphone goes on sale exclusively in the US through AT&T, which runs the country's biggest mobile network. It is priced at 500 dollars for a 4-Gigabyte model and 600 dollars for an 8-Gigabyte model. "We want to make choosing a service plan simple and easy, so every plan includes unlimited data with direct Internet access, along with visual voicemail and a host of other goodies," Apple's chief executive Steve Jobs said. "We think these three plans give customers the flexibility to experience all of iPhone's revolutionary features at affordable and competitive prices."