I've used Sprint for nearly 9 years now, and I've had very few problems (knock on wood).
I did have more problems when I had s Blackberry on Sprint, but that was Blackberrys system. Battery usage can be shortened by a number of things like texting, leaving your screen brightness on the brightest setting all the time and the number of "automatic updates" you have running.
I do know that Sprint is in the process of updating their entire system for 4G LTE . They will be moving some towers in the process, to provide better coverage in areas where they have poor service.
Sent from my PC36100 using EO Forums