Use the Find My app to turn it off remotely from another iPhone or iPad. To disable it remotely on any computer: iCloud.com > Find My > All Devices > your iPhone > Erase This Device.

Now you should be good to give your iPhone away, but if you have Stolen Device Protection turned on, you won't be able to ...

Here's how you can quickly turn off Find My on your iPhone if you need to disable it.

With the release of iOS 13, Apple combined the Find My iPhone and Find My Friends features into one app called Find My. Related: How to Turn Off or Disable Find My iPhone ...