WhatsApp tests feature to block messages from unknown numbers: How it works

WhatsApp is reportedly testing a new feature to enhance user protection by blocking messages from unknown contacts. Called “Block messages from unknown accounts”, the feature is expected to block messages from contacts not saved in the users’ phone.

WhatsApp update tracker, WABetaInfo, discovered the feature and noted that not all messages from unknown accounts will be blocked—only those exceeding a certain threshold. The feature was reportedly spotted in the WhatsApp beta for Android version 2.24.17.24.