====== Android - Firefox DNS over https ======

===== 1. install Firefox Nightly =====

In the Google Play Store [[https://play.google.com/store/apps/details?id<ignore>=org.mozilla.fenix|</ignore>Firefox Install Nightly for Developers]] 

===== 2. customise about:config =====

Open Firefox Nightly and enter about:config in the URL address bar. Then edit the following value:

<code>
network.trr.mode = 3
</code>

The following values are possible:

<code>
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
</code>

<code>
network.trr.uri = https://cloudflare-dns.com/dns-query
</code>

Other possible DoH servers are [[https://de.wikipedia.org/wiki/DNS_over_HTTPS|in on Wikipedia]].