Hmm... What phone browser are you using? I use Brave, personally. I have this issues intermittently when I'm browsing, and usually it fixes itself but I do some times have to go to the tweet. I haven't used the site on another browser, so I'm not sure if Opera (China owned though) would be any different.

I wonder if people should encourage people to share all tweets with Threadreader or an archive site? I have some trouble with the infinite capchas on some Archive sites, but not with the twitter mirrors.