How can this video of a phone running GTA V be real?

If even my gaming PC with a 3060 struggles to run this game at 60 FPS, did they overclock the phone?

From the same series as now you can play GTA Vice City directly in the browser

PS: where do you download this on the Play Store, how exactly is it emulated and, most importantly, what settings are needed to run GTA V on mobile?