How does Huawei tablet receive verification code?

Huawei tablet manager wants to get SMS verification code, it must get it through an application. You fill in the correct mobile phone number and then register with this number. After that, the phone will receive the correct verification code. Fill this verification code into an application of Huawei tablet, and it will be verified. The purpose of this is to ensure the safety of the system and not to be eroded.