Hi Russ, I just have a basic Smartphone, you can pick up one around $100, or just buy a very basic non Smartphone. Quite a few cheapies on Ebay too??
I am on prepaid with Telstra, at $30 a month, which includes free calls from 6pm - 6am, and some free talk and data.
http://www.telstra.com.au/mobile-pho...repaid-offers/
Good luck.