My wife and I have the Verizon family plan and both have iPhones. Today, my contacts appeared on her iPhone and iPad. We have separate iTunes accounts and do not have any of our personal stuff shared. I just checked at the Verizon web site and see that we can set up to share our contacts in their cloud, but we have not done this and apparently you have to do it through their app which neither of us have. Neither of us has changed any settings recently that should apply to our iTunes or iCloud accounts or Contacts settings. I deleted one of my contacts on her phone and it instantly disappeared on my phone. Any ideas?