Turn on airplane mode
Disconnect from Wi-Fi and Bluetooth
Restart the phone in safe mode
Uninstall suspicious or recently installed apps
Remove apps that request unusual permissions
Clear browser data and cookies
Delete suspicious downloads and files
Update the phone’s operating system
Update all apps from the official app store
Run a trusted mobile security scan
Change passwords for important accounts
Enable two-factor authentication
Sign out of unknown devices and sessions
Back up important data
Factory reset the phone if problems remain
Restore only essential data after resetting
Avoid sideloading apps and unknown links