The battle over prepaid between T-Mobile USA and Sprint Nextel's Virgin Mobile just got a little uglier.
T-Mobile and its ever-present spokeswoman, Carly, were the targets of a new commercial from Virgin, which argues that it offers the best value for a smartphone customer looking to avoid long-term service contracts.
The advertisement underscores the growing importance of the prepaid wireless business for the national carriers, which traditionally generated a bulk of their revenue with contract customers. As both Sprint and T-Mobile have struggled with the so-called postpaid segment--that is, subscribers--they have looked to add prepaid customers. As a result, … Read more