Turn on SafeSearch in your browser and search app
Use a family filter DNS on your phone
Install a parental control app
Enable content restrictions in Screen Time on iPhone
Enable parental controls in Google Family Link on Android
Block adult sites in your browser settings
Use a DNS app or VPN with adult-site blocking
Add site-blocking extensions in supported browsers
Set a strong passcode for restriction settings
Remove or restrict browsers you do not want used
Turn on app install restrictions
Use router-level filtering on your Wi-Fi
Ask your mobile carrier for content filtering
Keep the phone updated
Delete saved bookmarks and browsing history for blocked sites