My Cloudflare DNS setup isn't working on Android. What troubleshooting steps should I take?

If Cloudflare DNS isn't working, first double-check the hostname you entered in the Private DNS settings (ensure it's 'one.one.one.one' or the family-friendly version). Clear your DNS cache by restarting your phone or using a DNS cache clearing app. Verify that your Wi-Fi network isn't overriding the DNS settings. Finally, try switching between Wi-Fi and mobile data to see if the issue is network-specific.