What is the text message saying that your dynamic credit limit has been adjusted to 0?

If it is a China Unicom mobile card credit limit, the system will conduct a credit evaluation based on factors such as your historical payment credit, length of time online, consumption situation and other factors, and make appropriate adjustments. If necessary, you can also bring your valid ID card to the business office at your home location for consultation.

Warm reminder: There are differences in the business policies of various cities, and the actual situation of China Unicom in the place where you belong shall prevail.