[pololeono]

Search for good games in the vast pile trash mobile games: Gorogoa comes to mind

Start developping apps for your phone

Start modding the hardware of your phone (e.g. build a custom case)

Read books (modern phones with bigger screens are surprisingly comfortable for reading)

Research all the birthdays of your friends and safe them in the contact information. Your phone will remind you to send them a message on their birthday;)

[MerelyMortal]

> good games

I highly recommend "Backgammon NJ for Android" by Jimmy Hu - well worth the price. It has the best computer opponent I've seen (one that can usually beat me on the hardest setting, all of the computer opponents on the free backgammon games I tried years ago were a joke).

[fallinditch]

> good games

Coffee Golf is a great time waster

[fire_lake]

Hoplite is the best damn mobile game ever.