The previous 300 free text messages are missing.

According to the information you provided, it is generally because your previous package was given by SMS or you participated in the SMS network age upgrade plan of 4G package before. If you don't have SMS at present, it's because you have changed other packages or your current package doesn't meet the plan to participate in SMS network age upgrade. At present, users of 4G packages (4G packages, excluding 4G national package cards, clone packages and Changyue ice cream packages) can participate in the SMS era upgrade plan.

If you need to participate in the SMS network age upgrade plan, you can participate in the SMS network age upgrade plan for free. The longer you are online, the more gifts you get, up to 300 domestic peer-to-peer text messages per month. Edit the message 5072 to 100 10 to apply for participation. Click to enter /dxwljh for details.

If this is not the case, it is recommended to contact the Unicom customer service to which the number belongs.