According to Apple’s web site that service plans would cost between $60 and $100 a month. All three plans will offer unlimited use of the device's internet and e-mail services, Visual Voicemail, 200 SMS text messages, unlimited mobile-to-mobile and rollover minutes. "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."

The cheapest plan offers 450 anytime minutes along with 5,000 nights and weekend minutes. The second one which costs $79.99 guarantees 900 anytime minutes and unlimited nights and weekends. The top-level $99 plan means 1350 anytime minutes and unlimited nights and weekends

Also, the users will able to activate the device using iTunes program. "Users will be able to activate their new iPhone in the comfort and privacy of their own home or office, without having to wait in a store," said Jobs.

"Users will be able to activate their new iPhone in the comfort and privacy of their own home or office, without having to wait in a store while their phone is activated," said Jobs. "There are tens of millions of people in the US who already know how to sync their iPods with iTunes, and syncing their new iPhone with iTunes works the same way."

The iPhone, Apple's first ever cell phone 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.