How do I find the backup option on my iPhone 7?

How do I find the backup option on my iPhone 7? - 1

Connect it to a computer with iTunes. Use iTunes to do the backup.

Plug your phone into the computer and turn on iTunes. Find the Summary screen (have to click on the tiny picture of the phone). Then decide if you want to back it up right them to your computer, our set it to automatically back up to the Cloud. I have some in each.