I posted this question a few years ago but I'm trying again in the event recent updates have solved this... Me and my wife both have iphone 7's. Currently we use the same Apple ID on both. This enables us to share our contacts and calendars. If either of us adds a contact or event, it immediately appears on both phones. Very convenient with our busy schedules. However, sharing one Apple ID causes some problems as well. I'd love to be able to have independent Apple ID's but keep the instant updates for contacts and calendars. PLEASE NOTE: Having to "invite" calendar events or manually send new contacts to each other is NOT an option. They must update automatically. Can this be done? If not, can the folks at Apple please find a way? We're not the only family of apple product users that need info automatically synced across multiple devices. Thanks for any replies!