The government claims Sprint "inflated its charges by approximately 58 percent," which amounts to more than $21 million in overpayment.
Most smartphone subscribers only use about 20 percent of the data in their monthly plan. But heavy data subscribers are flocking to Sprint Nextel, while light users looking for a good deal are going to T-Mobile.
Smartphones may useful, but using them can come at a high price. Experts say a lot of consumers are paying too much money for their monthly minutes and data services. CNET's Kara Tsuboi reports.
Mobile bills analysis firm billmonitor reckons Brits are collectively wasting nearly £5bn per year on the wrong mobile tariffs -- an average of nearly £200 per person on the wrong contract.
Such a comment from a Yahoo executive is surprising, but this is just part of the long-running debate about whether YouTube makes money.
A new study released by BillShrink suggests that American wireless subscribers are overpaying on their phone service by about $366 a year.
This browser add-on follows airfare fluctuations so you can get money back if you overpaid for a plane ticket.
Amid accounting scandals and a drooping economy, software that promises to catch overpayment of bonuses to employees is finding fans among corporate buyers.