My mobile phone card is a dynamic zone. Why is it not free to send text messages to mobile phones, but also to pay?

You need to know the type of your package. M-zones are divided into two categories. One is the SMS package, which focuses on people who send more text messages. The other is the internet package, but there is also a certain amount of free news in the internet package. For example, the MO package of 16 yuan usually has a free message of 100. No matter how many text messages you send to China Mobile Unicom, whether you are connected or not, you need to spend a dime. All telecom charges are the same. In addition, if you use a lot of SMS, you can subscribe to 6 yuan Package 100 SMS, and there are more activities 10086.