Don't understand

Why are the files of 176*208 always larger than those of 176*220? I think most 176*220 games can play 176*208 games. My phone is 176*220. , I usually download the 176*208 version, which can be played, and because the 176*208 version of the game is more gorgeous, I keep downloading this version of the game, but the screen It feels strange and a pity that I can't play in full screen. It is possible that the screen resolution of 220 is a little larger than that of 208, so 220 may be able to display some pictures that cannot be displayed on 208, so that some content will not be missed. I have always hoped that the gorgeous game scenes of 176*208 can be displayed in full screen at the same time. What I said may be very complicated. I don't know if you can understand it clearly! Thanks!