Why can I call and send text messages online when my mobile phone card is down?

This is the credit system of China Mobile. The mobile company will provide you with a credit rating according to your usage time and consumption. The higher the rating, the higher the overdraft limit. If the overdraft limit is exceeded, the mobile company will stop working. The mobile company will make statistics on the date of 1 1 every month. It is recommended that you make up the phone bill before 1 1 to avoid downtime and credit rating decline.

Shenzhouxing can also participate in the credit system. It will take at least one year for Shenzhou Bank to reach the credit rating of 1. You can overdraw 5 yuan after one year. According to your continuous use and consumption, the mobile company will gradually improve your credit rating. Similarly, if you don't make up the phone bill on the day of 1 1 every month, the mobile company will also lower your credit rating.

Thank you for your support and wish you a happy life!