Do I really need to do a back up if I only replace my iPhone 7 plus’s battery?
Do I really need to do a back up of my iPhone 7 Plus if only the battery be changed?
iPhone 7 Plus, iOS 15
That’s your decision.
Only back up the data you care about.
Backups are how you show the data has value to you, too.
Now whether you get back the same iPhone, or if Apple might swap?