My parents share an iTunes/iCloud account. My mom just got a new iPhone 5c and my dad has a 4. When they set up the phones they used the same email for itunes because my dad doesn't have an email and barely knows how to use a computer. So since my mom just updated her new phone to the 5c today, my dad is now getting all of her text messages,apps, contacts, etc. now my question is how do I turn off the iCloud or change my fathers iTunes account so he doesn't get my moms info? I'm worried that if I delete the iCloud information on his phone that it will delete on my moms phone since it's happened before.