The 3 rules for handphone etiquette

1.  Color.  Only acceptable colors are black and silver.  Casing included.

2.  It is perfectly fine to reply a text with one word, heck, even one letter.  

3.  Calls duration should not exceed a minute, or at most, two.  Calls should be made with the sole purpose to communicate information, not emotions.  The handphone, also known as the mobile phone, is not for idle farts chit-chat.  Or at least, not in public.

Shoot, score, smile.