How to Fix Incoming WhatsApp Calls Showing Black Screen Issue

If you’re using WhatsApp for iOS, try updating the app, enabling notifications, turning off Focus/Do Not Disturb mode, and enabling background refresh.
For Android users, try restarting your phone, updating the app, enabling notifications and background data, clearing the cache, turning off battery saver, extending the screen timeout, logging out of linked devices, resetting settings, and reinstalling WhatsApp.
If you’re not being notified of incoming WhatsApp calls, make sure notifications are enabled, Do Not Disturb is turned off, and background data is allowed.
For troubleshooting methods for Android and iPhone, read the full article here: https://www.makeuseof.

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