The China Unicom prepaid SIM card gives you cheap calls in China with very cheap international calls.
This SIM card is pre-activated and ready to use upon arrival in China
Includes 100 RMB (around $15) call credit
The SIM card comes with 100 RMB of call credit (70 RMB for calls within China plus 30 RMB for international calls).
Cheap text messages
Text messages within China cost RMB 0.10 (around 2c). International text messages are RMB 0.8 (around 12c)
Cheap local calls within China
Local airtime (the cost to receive a call or make a call to a number in China) is only RMB 0.30/minute (around 5c/minute)
Cheap international calls
The China Unicom sim card gives you cheap international calls. 30 RMB per month is credited to your international call balance, which is enough for a 20 minute call to Australia, then after this, calls are charged at 2 RMB per minute (around 30c/min).
International text messages are RMB 0.8 (around 12c) per message.
Data access
Internet access costs 0.3 RMB (around 5c) per MB
Please note the SIM comes as a Micro or Nano Size only, and will require an adaptor for use with regular size SIM slots for some phones. These can be picked up cheaply at your local independent phone retailer.