How long can China Unicom’s wireless network card be used for 3G for half a year?

The default validity period of China Unicom’s 3GB half-year and 6GB annual card packages is the cumulative number of days calculated from 0:00 on the next day when the product is enabled (activated). The 3GB half-year card is valid for 180 days, and the 6GB annual card is valid for 360 days. For example, if you activate the 3GB half-year card package online on January 1, 2012, the 3GB traffic in the package will be valid until 24:00 on June 30, 2012.