NextDNS appears to implement DNS over HTTPs (DoH) and Firefox ships with it as an option, next to Cloudflare.
UPDATE — Took it for a test drive:
* Logs are concerning, but look good for optimizing the traffic and notice odd communications; I already noticed telemetry sent by my browser that I switched off
* Ad blocking seems to work, not as good as desktop uBlock Origin, but I'll take anything for my iPhone
* Latency is around 30 - 100 msec, which seems a bit high? (server I connect to seems to be 400 km away)
> I already noticed telemetry sent by my browser that I switched off
Mozilla is running some Firefox experiments with different DoH providers. Eventually Firefox may automatically select whichever DoH provider is the fastest for each user. This would improve performance for users and reduce the privacy concerns about DoH consolidation with one provider (the current Firefox default Cloudflare).
NextDNS appears to implement DNS over HTTPs (DoH) and Firefox ships with it as an option, next to Cloudflare.
UPDATE — Took it for a test drive:
* Logs are concerning, but look good for optimizing the traffic and notice odd communications; I already noticed telemetry sent by my browser that I switched off
* Ad blocking seems to work, not as good as desktop uBlock Origin, but I'll take anything for my iPhone
* Latency is around 30 - 100 msec, which seems a bit high? (server I connect to seems to be 400 km away)