My "restore from backup" does not complete as the screen lock appears
I have obtained a new iphone 6 with 64Meg and OIS 9.3.3 operating system. Prior to turning in my business phone; I backed up my data on itunes using my PC with Windows 10. As I am trying to "restore from backup" on an identical iphone 6, I have been unable to do so, when halfway through the download process, the screen lock appears and the iphone disconnects from itunes and the download stops. It appears to be appx 29 minutes for the download; but I have never gotten closer that 7 minutes to download completion before the screen lock or the 100% battery charge indicator disconnects the iphone.
I have turned off all notifications, deleted my AOL Mail, put the screen saver to "never", turned off passcode, all to no avail. HELP!
iPhone 6s, iOS 9.3.3