Comment Put the phone down (Score 1) 312
I am sorry to say that, but your question sounds like a (unsuccessful) attempt to justify a behavior that you _know_ is wrong. So just put the phone down, forget about Facebook, and enjoy your solitude while you can. If you are lucky, you will get married, have kids, and forget the meaning of the word "boredom" for the next 20 years.
In other words: I fail to see the problem. Do your homeworks, do some sports, then go home and take a book. What exactly is it that stops you from doing this?
Or get a hobby... something creative that excites you. Maybe you like to draw or paint? Play an instrument? Those things take so much time (years) to master to an acceptable level. Start today, and in 10 years you might be a decent painter or trumpet player (as far as technique is concerned).