Australia use

[EricS]

How do I get a connection in Australia and how much does it cost?

[Bambino · Accepted solution]

@EricS See this guide: Roaming on O2 - All you need to know - O2 Community

[Cleoriff]

@EricS 

Not sure if you are asking about phoning Australia from the UK? If so you need the International bolt On for cheap calls

https://www.o2.co.uk/shop/international/the-international-bolt-on