Device syncing help
How do you unsync iPhone 11 from iPad Pro 12.9?
iPad Pro, iPadOS 15
Question marked as
Top-ranking reply
Presumably both your iPad and iPhone are signed-in to iCloud with the same AppleID - and your files and services are currently synchronised. You can select which Apps and Services are synchronised from iPad/iPhone Settings:
Settings > [Your Name / AppleID] > iCloud - select or deselect services and Apps that you wish the synchronise here
This article from iMore may offer some useful insight:
The iPad User Guide is a rich source of frequently overlooked information. The Guide is available both online using a web browser (such as Safari), or as an Apple Books download:
iPad User Guide - Apple Support
https://books.apple.com/book/id1567104892