Why You Should Keep Android's Private DNS Mode Turned On (And How To Change Providers)

You may have noticed a setting on Android called Private DNS. It's on by default, and you're best off leaving it that way.
XDA Developers on MSN

I encrypt DNS and use Unbound as a recursive resolver to get the best of both worlds — Here's how

I take full control of my DNS queries using Unbound as a recursive resolver, encrypting traffic for better privacy and ...