By Mike Wehner, Tecca

Leaving a wireless carrier before your contract has expired is a costly decision, and for Sprint customers it's about to get even pricier. According to the reliable tipsters at Sprintfeed, the company is poised to bump the early termination fee for certain customers from $200 up to a staggering $350.

The new fee is allegedly scheduled to take effect on September 9, and will apply to all new contracts for "advanced devices" smartphones, tablets, and notebooks. But before you cry foul, you should know that the larger wireless carriers have had similar fees for a while now. Verizon's ETF penalty matches Sprint's new rate at $350, while AT&T's charge starts at $325 and decrease based on how long you have left in your agreement.

Spotted here