Does anyone know how to call Sydney? Send text messages? Please help.

1. Enable international roaming. Then dial the country code (006 1)+ phone number.

2. Send a short message, 006 1+ Australian mobile phone number, that's it.

However, it seems that not all Australian mobile phones can receive short messages from China. It's strange that I send text messages to my family in Australia, and some of them can receive them, while others can't. I wonder if it's the operator's problem.

Any brand of mobile phone card in China can send international short messages. I have used Unicom and mobile, and I can send them both. The charge is the same, 1 1 yuan, no more than 70 words.