<ul><li>TrueCaller is a caller identification app for Android and iPhone that can identify unknown callers on WhatsApp.</li><li>To activate the Caller ID for WhatsApp on TrueCaller, download and install the latest version of the app, complete the account creation process, and enable the necessary settings.</li><li>The feature will only work for incoming calls from unknown numbers and won't show a caller ID for contacts in your phonebook.</li><li>While TrueCaller can identify unknown callers on WhatsApp, it does not have the capability to block them. You need to manually block numbers on WhatsApp.</li></ul>

Caller ID for WhatsApp – How to Identify Unknown Calls

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