When I connect another happy iPhone iTunes: "This team has been paired with an iPhone or other device IOS" and wants me to be to "establish as a new iPhone" or "restore from backup ". Of course this is just the same I connected iPhone, so why not iTunes recognize it as such? This happened before, and I know that if you select" Restore from backup "Clears and resets all applications and content of the media, but in the process lose all the progress of data, for example in games, data input and settings in applications, etc. This is 10.2. iTunes 2.12 Windows 7 64-bit, 16 GB iPad with IOS 4.3.1. Any suggestion I can do? Even if I have to reinstate the backup, is there any way to prevent this from occurrence again?