The only time I ever had one overheat on me was when it was sitting outside in direct summer sunlight for an extended period.

Is there more to the story than you’ve included? Was it charging? What app was being used? What were the environmental conditions? Was it using WiFi or cellular?

Anyway, that screen is a good thing actually, it’s protecting itself from damage. Just let it cool and it’ll be fine.

I was using Teams for a video call, the phone wasn't charging, and was on mobile data, with fairly strong network. I just wasn't expecting this to happen during a call, at least not from premium brand.

I wouldn’t jump to blaming the phone.

Look at the version history of Teams… they release a bug fix update twice a week… you’d think at some point they’d run out of bugs, right? Nope.

There’s something not very good about that app that probably makes it run very inefficiently generating a lot of heat.

All phones are susceptible to heat since they don't have fans inside. 100 C/212 F is typically the maximum limit for safe internal temperatures, and your phone probably hit it.

Do you really want your premium brand phone burning up its battery and shortening its life? By that point, it had already stopped charging and slowed the processor down to try to lower its temperature, but that wasn't enough.

It has actually never happened to me in over 5 years with iPhones. I have no idea how people encounter this so often.

I let mine sit in water for a few mins and never happened again.