score:1
FrequencyCheck.com is useful for checking for device and network compatibility.
The model number of your iPhone 5c should be printed on the back cover, but model A1456 is the only one that supports all of Sprint's frequencies in the U.S., so it's reasonable to assume that it is the one you have. The Apple spec sheet shows that it supports the following frequencies:
- GSM/EDGE (850, 900, 1800, 1900 MHz)
- CDMA EV-DO Rev. A and Rev B. (800, 1700/2100, 1900, 2100 MHz)
- UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
- LTE (Bands 1, 2, 3, 4, 5, 8, 13, 17, 18, 19, 20, 25, 26)
According to FrequencyCheck, this device would be able to connect to the GSM/EDGE, HSPA, and UMTS networks of the major Australian operatorsβ Optus, Telstra, Virgin, and Vodafoneβ but only half of the LTE bands, as the phone supports bands 1, 3, and 5 but not 7, 28, or 40.
For another source, see Whirlpool's page on Australian Mobile Network Frequencies.
Upvote:-3
The first thing you need to do is Bing or Google the exact model number of you phone to see if it is a dual mode model. Or you can start here: Identify you iPhone model.
Sprint and Verizon use CDMA and there are no CDMA networks in Australia so the device will need to also support GSM to be used there.
You might be able to use you current plan but you'll have to contact Sprint to inquire exactly how you plan will work with international roaming. I don't get local SIMs, too much trouble, but I have an all in plan and only use WiFi calling.
If it's unlocked, the phone doesn't care and will use whatever services the network will allow.