Stumbled upon this : http://www.ausbt.com.au/travel-tech-kogan-s-new-dual-sim-149…
"Mobile phones with room for two SIM cards instead of just one have long made sense for business travellers who often head overseas.
There's no need to choose between keeping your Aussie SIM card to receive calls but risking being gouged for calls and data, or dropping in a local pre-paid SIM card for best value calls & data but missing calls to your regular mobile number.
Which is why the new Agora smartphone from direct tech seller Kogan blipped on our radar when it launched this week…………."
Looks like not a bad option for travellers.
I was told not to bring your expensive iPhone when traveling overseas.
Been discussed already:
http://www.ozbargain.com.au/node/90471
http://www.ozbargain.com.au/node/90294