Im Google Play Store Firefox Nightly for Developers installieren
Firefox Nightly öffnen und about:config in die URL Adressleiste eingeben. Anschließend folgenden Wert bearbeiten:
network.trr.mode = 3
Folgende Werte sind möglich:
0 - Default value in standard Firefox installations (currently is 5, which means DoH is disabled) 1 - DoH is enabled, but Firefox picks if it uses DoH or regular DNS based on which returns faster query responses 2 - DoH is enabled, and regular DNS works as a backup 3 - DoH is enabled, and regular DNS is disabled 5 - DoH is disabled
network.trr.uri = https://cloudflare-dns.com/dns-query
Weitere mögliche DoH Server sind in der Wikipedia zu finden.