Network Connectivity Issues An unstable internet connection is the most frequent culprit. Sometimes, the problem is specific to the recipient's side or a temporary ban on the service due to suspicious activity.
Update App to Fix WhatsApp Call Issues
Router settings could be blocking SIP protocols used by the app. Switching Airplane Mode on for ten seconds and then off again forces your phone to refresh its connection to the cellular tower or Wi-Fi network.
Note that this will log you out and clear local chats, so ensure you have your phone number ready for re-verification. Compatibility issues between an old OS version and a new WhatsApp update can lead to unexpected errors, including the inability to place calls.
Update App to Fix WhatsApp Call Issues
Troubleshooting the Error Resolving this issue typically involves verifying your device's settings and ensuring the software environment is optimized. It is rarely a permanent defect and is often the result of temporary conditions that block the data transmission required for real-time audio and video.
More About Whatsapp couldn't place call
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