I have been having a horrible time with my battery (20% average discharge rate) and I'm currently in a back and forth with HTC which is outright ridiculous. Telling me to basically turn off all services bar calls and text to improve battery life. But I'm doing the things they say to see if my battery improves. SO I've backed up my phone and done a hard reset. From what i read when i log in to my MS account during the set up it should give me the option to restore. However my phone won't log-into my account during set-up. I have decent reception (H+) at this point but it just won't log-in. It brings up a message saying " Can't Connect - We're having a problem with signing in. Make sure that you have good reception. If you do, the problem may be at the other end. Wait a little while and try again." then the option to Skip or Close. I can sign in once i gte passed this bit but by then it's too late. I believe you have to restore during set-up or not at all.