Is ist possible to use one iPhone by two clients, each having a separate Apple ID? If yes, are all data of the different users strictly separated?
[Re-Titled by Moderator]
Original Title: Shared iPhone
Nope. Not easily. Reset the device, reload it with the backup for the incoming user, and repeat the reset and reload for each client swap.
If you’re associated with a business or school with a network authentication or MDM setup, there are options for sharing iPad devices such as an iPad mini, if that might help: Shared iPad overview - Apple Support
No. iPhone is a single user device and was never designed to be shared by two users.
No.
Sharing an iPhone between two users with separate Apple IDs
