Regarding text messages, when I receive a text message on my mobile phone, do I have to pay whether I read it or not?

It is free to receive ordinary text messages, but there is a fee to receive customized text messages, such as weather forecasts, etc.

You can make a simple distinction yourself. If the sender is a mobile phone number, it is free. If it is 106****, it is usually a customized text message. But there are also public welfare ones, such as forecasts for typhoons, heavy rains, earthquakes, etc. For specific information, please check with the mobile company.