We are a New Apple Family: Dad iP4-Newest IOS, ipad2, Imac21", MBP Older Son-iP4S Newist IOS, iMac21 Younger Son iP4 Previous IOS, and iMac21 Dad iPhone used my apple ID for Purchases on App Store and My Apple ID to set up iCloud although I have not checdk off any of the boxes yet to use it. Older Son-Using my Apple ID to buy Apps and set up his iCloud under another Apple ID just for him. I was told this would keep his apps and contacts and songs off my phone. Is this correct? We have not check off any of the boxes on his iCloud either. But I did check contacts and it listed over 600 and he has 60 on his phone so we canceled? Once contaxct are uploaded to iCLoud if its wrong can you delete them? Younger son-Afraid to update IOS becasue he had like 70 APPS I dont want on my phone. SInce he is still on older IOS, the iCloub is not set up for him. He is however ising my APPLE ID to purchase Apps. I am confused how the iCloud, APPLE ID are related. I only want apps and music and contacts/calanders for the phone owner sent to the owners phone.