Usually I don't write such articles but this time I'll share my story. I was going to fly from London to Bulgaria. The flight is two hours and a half which is (by my opinion) enough to get bored. When I was traveling from Bulgaria to London I used my phone a lot. I read lots of stuff for reactive programming, played few games, ate some snacks. However, for the way back I wasn't prepared.

If you are wonder what exactly "Retina display" means I'll suggest to check this great article in SmashingMagazine. I searched a lot for a simple explanation and that's the best one.