How does World of Warcraft use the mobile phone binding function?

To sign in to www.wowchina.com, you need help with your mobile account. In the security center, there is a step-by-step method to add your mobile phone number to get the verification code.

1. After you get the verification code, please send a confirmation binding via your mobile phone immediately. The verification code is valid for 24 hours;

2. This service is limited to users of China Mobile and China Unicom;

3. China mobile users:

The following provinces can receive SMS binding confirmation: Beijing/Liaoning/Henan/Hunan/Guizhou/Heilongjiang;

In addition to Jiangsu Province, please log in to Jiuchengtong in other provinces and confirm that the binding is successful;

4. China Unicom was opened nationwide;

5. Mobile users in China are temporarily unable to use "Mobile Phone Password Recovery Service" in the following areas: Jiangsu, Hebei and Guangxi.