Sprint will increase post-paid rates with a $10 premium data add-on or charge to activations of all smartphones beginning on Jan. 30. With the growth of data consumption, Sprint says this fee will allow them to keep unlimited plans for its customers while maintaining a healthy wireless network. 

Some 4G phones are already tagged with an extra $10 per month for using the “EVERYTHING DATA” plan, now Sprint is simply saying this charge will now apply across the board on ALL smartphones ( Android, BlackBerry, Windows Mobile, Palm, and Instinct devices).

Existing customers will not be affected unless they upgrade or activate another smartphone. The company says smartphones average 10 times more data usage than feature phones.