My laptop uses the mobile phone card of China Unicom to surf the Internet. How to send short messages with a laptop?

I don't know if you connect to the computer with your mobile phone or a wireless network card. There are programs that can make phone calls and send short messages on the computer in the original installation disk with network card. Just install it directly. If you use a mobile phone to connect to a computer, you can download the driver matching the model of the mobile phone online, and then you can send text messages and make phone calls on the computer. Search on Baidu, there are many!