I always can't get messages, and I miss it. What happened?

When using a smart phone, sometimes I can't get a text message, which happened to my ZTE phone, and other brands of smart phones of some friends around you also happened. What should I do if my smartphone can't receive SMS? Below I will tell you how to solve it with my personal experience. 1. Most smart phones can be solved in this way, because all my friends' mobile phones are solved in this way, but I dare not say that all smart phones can be solved. It depends on what causes it, but you can try. 2. First, we turn on the dial and enter * # * # 4636 # * *, and the following screen will automatically appear: 3. In the above picture, we select "mobile phone information", and the following screen will appear: 4. Set the preferred network type on the drawing screen, and select GSM only from the drop-down menu, as shown below: After setting, you should be able to receive short messages, which is how all the mobile phones I contact are solved.