Your computer, phone, or tablet holds all kinds of personal information about you, and before you sell, return, recycle, or donate it, you should make sure to delete all of that information correctly.

Formatting your iPhone, which can also be referred to as a factory reset, is often useful when you find your phone ...

To format an external drive using the Apple Files app: Connect the storage drive you want to format to your iPhone or iPad's charging port directly or with an appropriate adapter.