How to AVOID big roaming bills with a smartphone.

It is constantly on Today Tonight & A Current Affair about how people are getting extraordinarily large & terrifying bills when they go overseas. In PLAIN ENGLISH:  If you don’t take these precautions, you will on average pay AU$20/Mb, that’s equivalent to ONE email. 10 minutes on Facebook will cost you about AU$300. 3 Average App/Game updates (which are often automatic) is about AU$500. […]