Is the Mobile-to-Mobile option available on any plan?
The Mobile-to-Mobile option is available for most plans and has a buy-up charge of $5/month per subscriber. Please check your plan details or call 1-800 SPRINT1 for availability. Note: The Mobile-to-Mobile option is not available to customers in Nextel Partners markets. Moreover, calls to or from Nextel Partner subscribers are not included under this option either.