T-Mobile to offer truly unlimited data plans for smartphones

Starting September 5, T-Mobile will offer truly unlimited data plans that won’t throttle subscribers or cap their data usage, the carrier announced Tuesday. ABC News’s Joanna Stern explains:

The plan will cost a very affordable $20 a month when added to one of T-Mobile’s value voice and text plans and $30 when added to a classic voice and texting plan. T-Mobile will offer an unlimited calling and text plan with the unlimited data for $69.99.

T-Mobile’s unlimited data plan offers unlimited Web surfing and app usage over T-Mobile’s HSPA+ network. There are no data caps or speed limits. The plan is only for smartphones, not tablets, laptops, 4G connection cards or mobile hotspots.