>>385798036
Factually incorrect, they use a proprietary subpixel display on their new phones like the Galaxy Z Fold 3 http://global.samsungdisplay.com/29043/

Even older oled devices like the PS Vita use a RGB subpixel stripe, and you have newer oled displays like the Dell aw3423dw which don't use pentile. The most relevant example would be PSVR which is an oled VR headset that doesn't use pentile.