How do I back up my smartphone data?

It says to update the software on your smartphone.

And they're asking you to back up your important data, how do you back it up?

432 2016-04-05 Gentleman

When you update your software, your personal data can be blown away, so you need to back it up.
As for the backup method, the phone manufacturer provides a backup program depending on your phone.

Gentleman 9 years ago 0

A. 2

iPhone has a function to back up on iTunes.
You can watch it on iTunes.

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