I actually have such a 720p screen on my phone. It's hard to compare because I look at the phone at a much closer distance than the laptop screen. I usually read using my laptop because the phone can't fit as much text on the small screen anyway, regardless of the number of pixels in it.

I can only say that I don't see the pixels on my laptop screen either and text looks "good enough" (as in, not pixelated and I can see serifs which also look natural) and that the phone would be quite unusable if viewed from the same distance as I look at my laptop screen.