Keeping in touch with family and friends back home is now easier than ever. Phone cards offering cheap rates for overseas calls are widely available. Alternatively, almost all communication apps now offer free phone/video calls. Popular ones include Google Hangouts, LINE, Skype, Viber, WeChat and WhatsApp.
To make international calls from Australia using a SIM card, dial + followed by the country code, area code (if required) and telephone number.