By following these easy steps, you may activate your DNS and completely protect your phone from unwanted Ads (most come with virus), etc. if you use an Android phone to store your coins and you dislike having pointless pop-up messages, blocking open wifi connections, or dangerous links when you visit a website.
Private DNS should be mandatory for everyone and Adguard is fine but I think using Mullvad VPN is better for this purpose, they are known to support privacy a lot.
For blocking adds you should type this in your phone settings:
adblock.doh.mullvad.net, and Bitcoin wallets or browsers should work just fine.
This is much better for mobile devices than installing any extensions, addons or separate apps, but for desktop browsers uBlock Origin is a king.