Cell phones:
Don’t:
If you are a person that travels in a public bus and your cell phone is in last generation of it like a blackberry or Iphone, is better that you don’t answer your calls inside the bus or outside in public places where is not security, and the thives can steal it.
Do:
When your cell phone rings in a public bus you have to wait to arrive a securited place like the university, the work, supermarket or some mall. Where are the security man and is more difficult that a thive can steal you.