En Google Play Store </ignore>Firefox Instala Nightly para desarrolladores

Abre Firefox Nightly e introduce about:config en la barra de direcciones URL. A continuación, edita el siguiente valor:

network.trr.mode = 3

Son posibles los siguientes valores:

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

Otros posibles servidores de DoH son in en Wikipedia.