How to find the address book backed up by Apple's mobile phone?

Iphone: settings-mail. Address book Calendar -iCloud (Apple Cloud Backup)-Fill in your own account (apple ID number and password)-Finish-Turn on the address book switch; Then you log in to iCloud (Apple Cloud Backup) with your apple ID on any computer, and there will be a backup address book, which has been synchronized with the mobile phone and is in an updated state; The phone will also remind you to plug in the power supply and connect to the WIFI backup.

This is Apple's selling point. As long as you use Apple's equipment, you can share things on iCloud (Apple Cloud Backup) at any time. (If you take photos with iphone, you can browse directly on Apple devices, mobile phones or computers. )