Turn off location services
Review and revoke app location permissions
Disable Bluetooth when not in use
Disable Wi-Fi when not in use
Turn off mobile data when needed
Check for unknown device admin apps
Remove suspicious apps
Update your phone’s operating system
Change account passwords
Enable two-factor authentication
Sign out of shared devices
Check Google or Apple account device lists
Reset ad tracking and privacy settings
Use a strong passcode or biometric lock
Disable location sharing in apps
Remove unknown SIM or eSIM profiles
Factory reset the phone if needed
Contact your carrier for help
Contact law enforcement if you are being stalked