Huawei changed its mobile phone card. Why can't it be activated?

Huawei's mobile phone cannot be activated because the SIM card is not inserted into Huawei correctly. Huawei activates the mobile phone card as follows:

1. Confirm that the mobile phone to be activated is connected to the Internet.

2. Confirm that the account entered in the activation interface is the account shown in brackets, and the password is correct.

3. The mobile phone cannot be activated by the above method. Please log in to Huawei Cloud Service official website on the computer with the same account, click Enter to find my mobile phone, select the corresponding model to activate, delete the device, skip the activation interface, and successfully boot.