Not sure how to read the info over 1.1.1.1 checking tool website

Hello everyone, I’m making a new topic with different tags because I didn’t receive any answers and I’m wondering all of this work…

I just followed the steps to put 1.1.1.1 DNS on my android phone as well as my router.

In the help page found here: https://1.1.1.1/help , here are my results on Android:

Connected to 1.1.1.1: No
Using DNS over HTTPS (DoH): No
Using DNS over TLS (Dot): No

1.1.1.1: Yes
1.0.0.1: Yes
[… the other two iPv6 connections]: Yes

I refreshed the page several times and the result don’t change. I’m connected via the application.

As for when my wifi is on, I get the following results (still on my phone):

Connected to 1.1.1.1: Sometimes no, sometimes yes (which is weird?)
Using DNS over HTTPS (DoH): No
Using DNS over TLS (Dot): No

1.1.1.1: Yes
1.0.0.1: Yes
[… the other two iPv6 connections]: No

Why does it say yes at the bottom for IPv4 / IPv6 while no at the top (except sometimes yes on router).

Also, how do I activate using DNS over HTTPS? Is this necessary if I use extensions like HTTPS everywhere on Firefox?

Thanks for your help!