Call your phone from another device
Check nearby places you last used it
Use Find My Device on Android
Use Find My on iPhone
Sign in to your Google or Apple account
Ring the phone if it is nearby
Check the last known location on the map
Lock the phone remotely if needed
Mark it as lost if available
Contact your carrier to suspend service
Ask nearby people if they saw it
Retrace your recent steps
Check bags, pockets, car seats, and furniture
Use a Bluetooth tracker if attached
File a police report if it was stolen