My ISP sucks, so blaming random internet disconnections on them is a no-brainer 99% of the time. Recently, however, I've found that my home internet disconnects for 3-5 minutes whenever I open 4chan from Read Chan to browse from my phone. It doesn't happen every time I open the app, but only if I've not opened it for a few hours. It doesn't happen when I open 4chan from my PC, so I'm clueless.

Is there any way that this could be happening? Would it be a sign that my phone is infected somehow? Pic very related