They left out the most important tip, "Never hand in your sim card with your cell, for repair or whatever." A friend's son's fiancée got ripped like that/
Actually, every time you change your pin you run the risk of somebody picking up the change.
It's better to not change your pin unless you have cause to do so.
Selloml, that is why I don't want anything to do with RVN "Oh, but it is quick" says the teller. Huh!
For those that don't know what a RVN is, when you log in they sms another password to you.