TIL people have to reset their phone's internet connection.

same here, it somehow also fixes miracast issues with samsung tablets at work

I often have to toggle airplane mode when I take the subway. After it loses signal, it won't reconnect until I do. Older android phone.

I'm wondering if it's a dns issue.

Try enabling this feature.

https://dns-over-https.org/en/guides/how-to-setup-doh-in-android/

Sadly (and similarly anecdotally) yes.

Toggling airplane mode basically "turns off and on again" your phone's network interfaces, resets the routing table, and, I think, flushes the DNS caches. I don't have the problem so much with wi-fi unless I roam between my main and guest networks which use different DNS records for some of my self-hosted apps. (e.g. the "internal" DNS record gets resolved on main wifi, gets cached, and then is inaccessible on guest wifi until the cached record expires).

Mainly, I just toggle the cellular data since my primary issue is that sometimes calls/texts stop working without notice.

How peculiar. Most of the time, I just hit "reset to default":

That's the first thing I do, and the first thing I recommend.

On wifi I turn the wifi on and off again, which is similar steps, but haven't had the same page load hanging crop up on cell service.

Hopefully I will remember this trick if it ever comes up again.

I have to do this multiple times a day. It's not just Internet, sometimes voicemails and text messages will come through immediately after.

I had to do it with my previous Samsungs! I've not had to do it with this one so far. Another option is picking another network manually and then putting it back to automatic.

Lately I have to restart my internet from the settings every couple of days- I didn't actually think to use airplane mode, will be trying that next time.