Call your number from another phone
Use Find My Device on Android
Use Find My iPhone on Apple
Sign in to your Google or Apple account on a computer
Check the phone’s last known location
Play a sound if the device is nearby
Lock the phone remotely
Display a contact message on the lock screen
Change passwords for important accounts
Contact your mobile network provider
Ask them to block the SIM and device
Check your recent location history in Google Maps or Apple services
Report the phone as lost to local authorities
File an insurance claim if covered
Monitor your accounts for suspicious activity