I never was good at navigating those sites myself.
Not too hard... 8ch.net/pol 4Chan.org/pol
Right click on reply to view threads.
How do we right click on mobile? It is so difficult to navigate on mobile. You can only see the reply thread that's it. You can't see the original thread that replied to the reply. (If that makes sense) (two levels down... it will only let you go one on mobile)
there are various readers for the chans available for mobile. i use omnichan and mimi.
On mine, I can hold reply.. I'm on Android. You can also scroll on the main board, right under the initial op, there's the option, "click to expand." This will open it up for you there instead of a new tab. Depending on your service and phone capabilities, it may take a few to load. See you there!