Why is there a credit card bill prompt in Xiaomi's mobile phone calendar?

This estimate is caused by a virus on the mobile phone. It is best not to click to enter. The following is the general cleaning method:

1, turn on the phone, and then enter the phone desktop.

2. Click the Desktop Security Center to enter, and then select Virus Scan to enter.

3. Then run a virus scan and delete the detected danger.

4. If you can't check it out, the general method is to restore the factory settings.