I want to sign in one phone only
I have 3 divace sharing the same I cloud and I want to sign one of them only
iPhone 14 Pro Max, iOS 17
Question marked as
One option is to use different accounts on the other devices. The other is to disable iCloud on the other phones.
Read this support article about how to change your iCloud feature settings [iOS and Mac] - Change which apps sync and store data with iCloud - Apple Support - "'When you turn off an iCloud feature on a device, information stored only in iCloud for that feature is no longer available on the device. If you turn off Mail, Contacts, Calendars, Notes, Reminders, or iCloud Photos on just one device, you can still view and change your information on iCloud.com and on another device you set up for that feature."