Note down the IMEI number from the phone box, bill, warranty card, or your mobile account
File a police complaint immediately and provide the IMEI number
Ask the police to register the IMEI in the national lost or stolen device database
Contact your mobile network operator and report the phone as lost or stolen
Request the carrier to block the SIM and blacklist the IMEI
Use official device tracking services such as Find My Device or Find My iPhone
Sign in to your Google or Apple account from another device to locate the phone
Check the device location history if available
Mark the phone as lost through the tracking service
Display a lock screen message with a contact number
Erase the device remotely if recovery seems unlikely
Keep monitoring the IMEI status through the police or carrier
Share the IMEI only with police, carrier, or authorized authorities
Avoid using third-party IMEI tracking websites or apps that claim instant live location
Keep proof of ownership ready for verification
Change passwords for accounts linked to the lost phone
Inform your bank and other sensitive apps if they were accessible on the device