Free · every browser and app

How to block adult sites on Android

Chrome on Android can't run extensions, so no blocker extension can protect your phone. Android's built-in Private DNS can: point it at a free adult filter and every browser and app on the phone stops loading adult sites, on Wi-Fi and mobile data, Incognito included.
About 1 minute · Free · No account needed

Set up Android

  1. 1Open Settings → Network & internet. On Samsung: Connections → More connection settings.
  2. 2Tap Private DNS → Private DNS provider hostname.
  3. 3Paste the hostname below and tap Save.
  4. 4Open zentab.live/protect on the phone and tap Test this device.
Private DNS hostname
adult-filter-dns.cleanbrowsing.org

Works on Wi-Fi and mobile data, in Chrome, Samsung Internet, every other browser and every app, including Incognito tabs.

Make it hard to undo

Android lets anyone switch this back. Test this phone while signed in with your Gmail: your dashboard then shows when each device was last confirmed protected, so a friend or partner you share it with can keep you honest.

Check that it worked

Open zentab.live/protect on this device and tap Test this device. It checks that known adult sites are unreachable without opening or showing anything. Sign in with your Gmail first and the result appears on your dashboard, next to your other devices.

Frequently asked questions

Does Private DNS slow my phone down?

Not noticeably. A DNS lookup happens once per site, and the filter's servers answer in milliseconds. Pages load as they did before.

Does it work on mobile data, or only Wi-Fi?

Both. Private DNS is a phone-wide setting, so it applies on every Wi-Fi network and on mobile data.

Can apps like Reddit or X still show adult content?

The filter blocks adult domains, so images and videos hosted on adult sites won't load inside apps either. Content hosted on a general platform's own servers can still appear, so pair it with that app's own sensitive-content setting.

Protect Chrome on your computer too

ZenTab blocks adult sites in Chrome from the moment you install it. Pro adds urge challenges, SafeSearch everywhere and a 30-minute lock, so a weak moment passes before you can switch it off.