How to use Unicom mobile phone card to send text messages to open blue diamonds?

Hello, about using Unicom mobile phone card to directly open qq blue diamond service, only some city Unicom users are supported. You can choose your mobile phone in Tencent's Recharge Center (/)-Service Opening-Blue Diamond, and then enter your number to see if it can be opened. If not, you can only use Tenpay, prepaid cards and other ways to open the blue diamond.