Tools/materials: Apple iPhone8, IOS 13.3. 1, WeChat v8.0.40.
1. Open your mobile phone, enter WeChat, and click the official account of Gree Electric WeChat.
2. Click on the service center.
3. Click Self-Service.
4. Enter the mobile phone number, obtain and fill in the verification code, and then click Login.
5. Click on the reservation service.
6. Improve the service information, and then click Submit.