Wechat can only receive information if it is opened. What is it?

Network problems, outdated WeChat version, mobile phone system problems.

1. Network problem: If your mobile phone signal is unstable or the network speed is slow, WeChat may not receive the message in time. You can try to switch the network environment, or restart the phone to solve the network problem.

2. The WeChat version is too old: If your WeChat version is too low, some functions may not work properly, including receiving messages. Please make sure that your WeChat is the latest version.

3. Mobile phone system problems: The failure or compatibility problems of the mobile phone system may also affect the normal operation of WeChat. You can try to restart your phone or update your phone system.