This option has already appeared in the latest beta version of WhatsApp for Android 2.23.3.15. In the application, you can create a call shortcut by clicking on the contact you want. After creating a new search shortcut, it will be automatically added to your device’s home screen.
This feature will help users save time and greatly speed up the search process. This is especially useful for people who call the same contact frequently and don’t want to open the app and search for a contact every time.
Source: Ferra

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