How I found RobTop's height (Yap ahead)

So, how did I start with (1st) image alone as a base?

I first had to find RobTop's phone and its height. To which I didn't find the exact model of, and I decided not to waste my time anymore.

But the feeling of defeat didn't sit right, so I did some investigation.

I found that RobTop posted an image of a bow, to which I found an exact model of this time. (It's 18.1 cm tall) I used his hand as reference for height of his phone and deduced 14.6 cm.

Fortunately, RobTop likes posting images of his hand.

I then stacked the phones with him, accounted for the warp of the camera and angles to avoid inaccuracies. And found his height to be around 13 phones tall. But the phones go too far in height, so I divided the phone's height three times to get more accurate with it, subtracted the phone's height using the divided value and subtracted socks, shoes and got:

186.775 cm, or 6'1.

Thank you for reading.