Hi! I have the same issue (Orange France mobile network). It might be IPv6-related?

https://news.ycombinator.com/item?id=49499217

I'd say it's an IP or subnet block, unrelated to the type of browser. Maybe automatic block of crawler (too many page requests in short time). If you know your IP address (e.g. https://ipinfo.io/ip) email the moderators. hn@ycombinator.com

Working fine from Firefox on Android over PureTalk (small MVNO using AT&T's spectrum).

I was able to load up this page in a private browser (to be logged out) over cellular on an iPhone.

This might be something with your phone.