It isn’t a real button for like three versions now (since iphone 8 or so) - it’s a haptic sensor which i think also plays fake sound through the speaker. Since

It isn’t a real button for like three versions now (since iphone 8 or so) - it’s a haptic sensor which i think also plays fake sound through the speaker. Since it’s the only iphone that even has center “button” now it’s still the best phone imo