iPhone, iPad and iPod touch
If you’re no longer using an iOS device, an Apple Watch, AirPods, or a Mac, you can remove it from Find My iPhone using Find My iPhone on iCloud.com or your device.
Macbook, Macbook Air, Macbook Pro, iMac, iMac Pro and more.
Your Mac comes with software to make backing up simple. Just turn on Time Machine and connect an external drive. Time Machine makes automatic backups of everything so you can recover individual files or your entire system from your backups.