Long story short: My son's iphone 3 camera died so we had to get another phone. Got a 4S. Transferred all my stuff from iphone 4 to 4S. Then transferred my son's data from 3 to 4. One snafu: Every single calendar alert he puts on his phone is popping up on mine. Driving me nuts. He backs up to the cloud but should we both have our own clouds? I use AT&T. My phone is primary line and his is added line. We share minutes but have separate data plans. Short of not using cloud for his backups, any other way to resolve this?