Uninstall suspicious or recently installed apps
Check app permissions and remove “display over other apps” access
Turn off notifications for unwanted apps and browsers
Clear browser data, cache, and site permissions
Disable pop-ups and redirects in your browser settings
Remove unknown admin apps from device administrator settings
Scan your phone with a trusted mobile security app
Update Android and all installed apps
Restart the phone in Safe Mode and remove problematic apps
Reset app preferences if needed
Factory reset the device if ads still continue