How can I know how many free text messages I still have? If there is no free SMS, what is the cost of sending it?

The method of querying the remaining number of free short messages varies with the brand and model of the mobile phone, but it can generally be queried in the following ways:

1. Call the customer service hotline: The customer service hotline of different mobile phone card operators may be different, so you can call the corresponding customer service hotline for inquiry.

2. SMS inquiry: Send the SMS command CXSM to the official number corresponding to the operator to inquire about the remaining number of SMS.

3. Inquire through the mobile phone business hall: Log in to the mobile phone business hall, and you can view the remaining short messages in my package.

4. Inquire through the online business hall: log in to the online business hall, find "Package Balance" in "Inquiry", and click "View Details" to view the number of remaining short messages.

If there is no free SMS in your mobile phone card package, sending SMS will be charged according to the SMS charging standard of the operator. You can consult the customer service hotline of the corresponding operator or go to the business hall to understand the specific charging standards.