But how much % of these mobile gamers are using iPhones, I wonder.
AFAIK developing countries are dominating mobile gaming for a simple reason that they cannot afford PS/Xbone/PC. Ergo no iPhone for them to begin with.
A surprising amount. Genshin and many Gatcha games are GPU intensive, even on such a small screen.
It might be because they code very inefficiently, and they might also be doing a ton of crypto and anti-hacking calculations in background, but these games are surprisingly taxing for the phone they're running on.