Canada Pre-Paid to work with Australian iPhone 3G

[fluffybunny]

Hi,

Just started looking into pre-paid sims in canada, and am not sure if I can use a Canadian Sim in my phone, so my question:

Will an Australian iPhone 3G work with Canadian Pre-Paid Sims?
I had a quick comparison of the specs between the Iphone 4 (3G isn't listed anymore) on both the Canadian and Australian Apple websites and these details match:

Cellular and wireless

GSM model: UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz)
802.11b/g/n Wi-Fi (802.11n 2.4GHz only)

The Canadian site also has "CDMA" listed which the Australian doesn't:

CDMA model: CDMA EV-DO Rev. A (800, 1900 MHz)

Would I be okay to use a Rogers , Fido or Wind sim card? Still looking into the pre-paid offers available.

Thanks