I went to Sprint today about my battery issue. I cannot get more than 4hrs of battery time if I use minimal Internet usage and text messaging. Their service repair downloaded Advanced Task Killer and set my roaming usage to Sprint only. So it looks like Sprint recommends a task killer. And by the way I still see no improvement on my battery. I am down to almost 50% with about 1hrs worth of texting and light Internet use. I've about had it with this phone. Funny too right after I got there another guy came in with the same exact problem.