Out of the blue the phone starts and endless bootup then shutdown, then repeats. It dont even get to the windows logo. I thought i had a full charge on the battery and it did. Two and half years ago I replaced the battery myself. Everything was good then. so I figure maybe the battery is doing it so purchased replacement and I replaced it but its still doing the same boot up shutdown repeats. I even did the windows recovery application from the computer to install fresh os but still no good. is this the end of the phone? Everything was working good on the phone minutes before it started this. THE ONLY WAY TO SHUT THE PHONE OFF IS i LET THE BATTERY RUN DOWN. HAD PHONE SINCE NOV2013..