My phone works normally in every other way, but the battery no longer holds a charge well. I'm considering having the battery replaced and want to know whether the repair process normally wipes the phone or puts my photos, apps, and other data at risk. I already keep my important data backed up, but I'd like to understand what to expect.
2 Answers
There’s always some risk when hardware is being repaired, even if data loss isn’t an expected part of the procedure. Keep both a cloud backup and, if possible, a computer backup so you’re covered before the appointment.
The phone should generally come back with its data intact after a routine battery swap. Still, backing up beforehand is the safest move because data can be lost from unexpected hardware failure or accidental damage, not just from the battery repair itself.

I already have my important files backed up, so I mainly wanted to confirm whether wiping the phone is normally part of a battery replacement.