This step-by-step tutorial will show you how to block advertisements on a Samsung Galaxy smartphone or tablet without using an additional ad-blocking app or browser extension. To block ads on a Samsung phone or tablet: 1. Open settings. 2. Open 'Connections' or 'Network & internet'. 3. Tap on 'Private DNS'. If you don't see this option, tap 'More connection settings' or 'Advanced'. 4. Tap on 'Private DNS provider hostname' to turn this option on. 5. Enter 'dns.adguard.com' in the field below 'Private DNS provider hostname'. 6. Tap 'Save'.