Sprint 4 G BroadBand Sprint has not reached the 4G technology yet in your area, depending on where you'll be using your 4G aircard, speed is rely on the signal strengh from the tower, if you have weak 4G signal in your area, forget about what Sprint advertise for their 4G speed. I have 4G air card for almost a year now, speed is slower than 3G. Sprint will not let me switch back to 3G service. I have to cancel it and pay a cancellation fee to get out of the contract. So beware.