Why does WeChat payment need SMS verification code?

After the change payment amount of WeChat payment account exceeds 2,000 yuan per day, it is necessary to issue a verification code to the mobile phone reserved by the bank to complete the security verification. Account with real name and digital certificate installed: change the payment limit: 80,000 yuan for business payment and 200,000 yuan for transfer.

Method of installing digital certificate

1. Click "Pay" in the "Me" interface.

2. Enter the payment interface and click "Wallet".

3. Click "Security" in the "Wallet" interface.

4. Enter the security interface, and you will see the digital certificate. Click.

5. The interface shows that the digital certificate is not enabled. Click the Enable button.

6. Enter the ID number and click Verify.

7. Activation has been completed.

Tencent Customer Service-Why does WeChat need verification code for change payment?