Virgin Mobile today is next up in the US to offer an unlimited calling plan that it promises should beat other, larger carriers. The Totally Unlimited service removes the caps on the number of minutes but also eliminates some of the restrictions that affect rival plans. Subscribers don’t need to sign a contract locking them into service or to pay roaming fees when they venture outside of Virgin’s official coverage area. Virgin users also don’t require a credit or debit card and can pay the bill using the carrier’s own Top-Up cards.

The plan will be available at the start of July and costs $80 per month, or $20 less than other plans promising completely unlimited calling; an extra $10 per month adds unlimited e-mail, IM, MMS and SMS messaging to the plan.