I recently update my MacBook Pro to El Capitain OS X 10.11. My question relates to the new feature iCloud Drive. I have two iPhones. An iPhone 5 from work has the latest operating system IOS 9.3.2. My private iPhone 4 cannot be updated from the IOS 7.1.2 system installed. If I activate iCloud Drive on my MacBook, does this disturb the synchronization of basic data such as notes / calendars / reminders between my MacBook and iPhone 4?
