Open Settings
Tap Safari
Turn on Block Pop-ups
Turn on Fraudulent Website Warning
Tap Extensions if available
Install a content blocker from the App Store
Enable the content blocker in Safari settings
Use a browser with built-in ad blocking
Turn on Limit Ad Tracking in Privacy and Security
Turn off Personalized Ads in Apple Advertising
Use DNS-based ad blocking
Install an ad-blocking VPN or profile
Keep iOS updated
Clear Safari history and website data if needed