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Location
Open Settings and touch Location to manage location
services, which help your phone and apps determine your
location. To use location-related applications, such as finding
your location on Google Maps, you must have location services
enabled on your phone.
Security and Privacy
Open Settings and touch Security and privacy to configure the
privacy settings.
App security: Check which apps have been allowed to
access certain permissions. You can also change the app
permissions.
Device unlock: Set a PIN, Pattern, Password or Face
Unlock
Account security: Review your google account settings
Device finders: Find my device uses your Google account
to locate your device.
System and updates: Review system and Play Store
updates
Privacy: Review your privacy settings
More security and privacy:
Review Notification permissions and other settings
Usage & diagnostics: Help improve your Android device