Find iPhone is a pretty good security utility and unique on iPhone. With this utility, you can find the missing device on the map and can perform operations such as Play a sound (to find the thief easier) or wipe data and report a lost device (not to sensitive data falls into the wrong hands and remotely locks your device with your iCloud account).
Step 1: To turn on and off find iPhone we go to Settings => Accounts & Password => iCloud.
Step 2: Select Find iPhone and turn the switch to on, off. If you turn on the iPhone finder feature, you should turn on the Send last option option to increase the effectiveness of the Find My iPhone feature .
If you choose to turn off Find My iPhone , the device will ask you to enter your Apple ID password again . Select Off and the switch will turn white as shown below, and you've turned off Find My iPhone successfully.
With the instructions to turn on and off the iPhone find in the article, you can improve the security of your iPhone by turning on the Find iPhone feature and turn it off when you want to cede the device to a friend, or relative . Good luck!