International texting

[Amelio101]

Hey guys a friend of mine moved to Australia and got a local number there.
She can text me and I can receive it. But if I reply she cannot receive it..
Any ideas would be appreciated thanks in advance.

***Edited to add labels***

[10yearfido]

What carrier is she with? A list of compatible carriers can be found here:

http://www.fido.ca/web/content/addon/post_text_messaging

In Oz, that would be:

1. Hutchison 3G Australia Pty Limited
2. Optus Mobile Pty Ltd. "Yes Optus"
3. Telstra
4. Vodafone