How does iqooz7 set the prompt sound of WeChat to whistle?

1. Open the WeChat application on iqooz7, and on the main interface of WeChat, click the personal avatar in the upper right corner to enter the personal settings page.

2. On the Personal Settings page, find and click the settings option. On the Settings page, locate and click the New Mail Alert option.

3. In the new message reminder page, find and click the prompt tone option. In the tone page, you can choose the default tone or the custom tone. If you want to set it as a whistle, you can click the custom alert tone option.