How to Backup iPhone Before Selling?

Back up first, then transfer to your new device, and only then erase the old iPhone. Apple suggests creating a backup and transferring information before removing personal info from your old device.

Steps / Best Methods

Choose a backup method: iCloud backup or computer backup (Finder/Apple Devices/iTunes).
Complete the backup and verify it finished successfully.
Transfer to the new iPhone (Quick Start or restore from the backup).
After confirming the new phone is complete, sign out on the old iPhone and erase all content and settings.

Backup type	Pros	Cons
iCloud backup	No computer needed	Depends on Wi‑Fi + iCloud storage
Computer backup	Fast on cable; can be encrypted	Requires computer + storage

🤔 Protip:

Optional: If you want a secondary copy (extra peace of mind), consider creating an additional desktop backup using a tool like Wondershare Dr.Fone before erasing.