How to use the function of connecting letters and text messages?

A very short answer, you usually use Lian Xin. Lian Xin SMS is a function that everyone likes to use. Even if your friend doesn't use Lian Xin, you can use this function to contact him, which not only saves the short message fee, but also achieves the effect of communication. The use method is also very simple. Find the person you want to text, click on him, edit the content and send it out.