youtube resolution

[luqman412]

What do you guys think when our phone only support 1440p max video playback at youtube (if u are using 1440 screen res. ) Meanwhile iphone only fullHD plus lower resolution than samsung flagship but still capable of playing 4k video on youtube.  Any idea why?

[luqman412]

problem solve 4k resolution even screen resolution 1080p 120hz. updated by youtube application where my old 720p phone now can watch 1080p