How to use mobile phone to link computer to send short messages?

I don't know what type of mobile phone the landlord is, but mine is Nokia, so it's no problem. Install Ruokia's mobile phone driver support software (a CD is attached when you buy a mobile phone, of course, it is also available on the Internet), then install a widcomm (the data cable should be ok, I use Bluetooth), then connect with the mobile phone through the computer Bluetooth, open the Nokia client, and if someone sends a text message, select the phone book list after writing it. I don't know if this is what the landlord said. In fact, this is still sent from the mobile phone network by Bluetooth, and the tariff is the same as before, that is, the speed of sending text messages on the computer will be much higher.