1. Dependence on Battery Power: When a mobile phone is shut down, all of its functions, including the display screen, are powered off. WeChat video calls require both the sender and receiver's cell phones to be connected to the internet and powered up, so if the recipient's phone is turned off, the video cannot be displayed.
2. Loss of Connection: When a smartphone is turned off, it loses its connection with Wi-Fi or cellular data, which is required for video call transmission. As a result, even if the sender's device is connected to the internet and the video call is successfully established, it will be impossible to display the video on the receiver's device, which is turned off.
3. Absence of Processing Power: Video calls necessitate rapid processing and graphics rendering to create high-quality visuals. A smartphone that has been turned off has no processing power and thus cannot show a WeChat video call.
4. Lack of Active Applications: When a phone is turned off, none of the applications are active or running. To show a WeChat video call, not only does the phone need to be turned on and connected to the internet, but it must also have an active WeChat application running.
5. Technical Limitations: Simply put, if a mobile phone is turned off, it cannot perform any functions until it is turned back on, which includes displaying WeChat video calls. This is due to the technical limitations of the device.
