Choose settings for Find My iPhone
Find My iPhone enables you to find your mobile phone if you lose it or you can lock it should it get stolen. To select settings for Find My iPhone, you need to activate your Apple ID on your mobile phone.
Find "Find My iPhone"
Tap your Apple ID.
Tap Find My iPhone.
Turn on Find My iPhone
Tap the indicator next to "Find My iPhone" to turn on the function.
Turn sending of latest location on or off
Tap the indicator next to "Send Last Location" to turn the function on or off.
If you turn on the function, your mobile phone can send its current position regularly to iCloud using GPS and Wi-Fi networks.
Return to the home screen
Tap the Home key to return to the home screen.