Oh yes, it’s the legendary kurkkumopo! If you know, you know.

What? 4k is literally a resolution, usually 3840x2160 or something around that. 1080p is another resolution, usually 1920x1080. These are never comparable.

The G in 5G stands for generation. This has nothing to do with quality or speed, but it sets an upper limit. You can have 5G that is absolute shit or 5G which is state of the art fastest speed available (until 6G comes out).