"Global data coverage in over 100 countries at no extra charge." Thus reads a Facebook teaser image for T-Mobile USA's (TMUS) 8:15PM ET "Uncarrier 3.0" event. The text suggests a global data roaming plan is on tap, but there are no details yet about monthly pricing or data limits.
Cheap international data roaming could appeal to enterprise mobile clients, many of whom have to pay through the nose to browse the Web and check e-mails on foreign 3G/4G networks. Compared with Verizon and AT&T, T-Mobile currently has a miniscule enterprise base.