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.
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Let's Encrypt warns that 'some websites will not be viewable on one-third of the world's Android devices'

However, since DST Root CA X3 expires on September 1, 2021, Let's Encrypt will move to its own root certificate 'ISRG Root X1'. With this migration, Android OS versions prior to version 7.1.1 without ...