I don't understand why King Card users receive this message.

It is recommended to contact local operators for customer service consultation.

Now Unicom's Tencent Dawang card is quite good. Tencent dawang card uses Tencent application-specific traffic for free, and dawang card also opens the daily rent function of traffic by default, and there is no charge for not using it.

From 9: 00 am on June 7, 20 18, new king card users will receive a monthly 1GB domestic traffic package (that is, the traffic included in the activity of choosing between traffic and voice). After activation, they can unconditionally switch to 100 minutes domestic voice hall and Wangka assistant. Old users of Wangka (Dawang Card, Wangdika Card and Tianwang Card) can unconditionally apply for free monthly subscription of 100 minutes domestic voice or 1GB domestic traffic.