Guide
What to back up before selling or trading in an old phone
Selling or trading in an old phone is a deadline that forces a backup decision whether you planned for it or not, and a few categories of data are easy to overlook in the rush.
Account-synced content usually transfers automatically
Contacts, calendar entries, and anything tied to an account generally move to a new device without manual effort, as long as the same account is used on both.
Locally stored content needs a deliberate check
Photos or files saved only to the device, messages stored only in a local app, and anything downloaded directly to the phone are the items most likely to be missed, since they are not automatically synced anywhere.
Confirm before you reset, not after
A factory reset is difficult or impossible to reverse once performed. Verifying that everything important has actually appeared on the new device, rather than assuming it has, should always happen before resetting the old one.
Questions people ask
Is a factory reset enough to protect my privacy when selling a phone?
A factory reset combined with removing accounts beforehand covers most cases, though the specific steps vary by device.
What if I already sold the phone and forgot to back something up?
Once a device has changed hands and been reset, recovery is unlikely — this is exactly why checking beforehand matters more than trying to fix it after.