Ask HN: Does HN block mobile browsers?

Recently I have been unable to visit hn from my mobile phone over the cellular network. I have standard Android and I've tried multiple browsers including Firefox, Chrome, and Brave. I don't need or want to login while I'm about so I was trying to reach the site without an account. If I'm connected to a wifi network then everything works.

Is this the result of a method to keep out bots that is over zealous?