WhatsApp is testing a feature that lets you 'revoke' unread messages you sent prematurely

Soon, you may be able to take back your drunk or needlessly angry texts on WhatsApp.

The Facebook-owned messaging service is reportedly testing the ability to edit or recall messages that have already been sent. This means you can delete or revise a message even after your friend's phone has technically received it. 

The feature only works if the recipient has not read the message yet. On WhatsApp, this is signified by a blue tick mark. If the message has simply been received by a phone but not read — with grey tick marks, in other words — the feature still works. 

The feature was first spotted by Twitter account @WABetaInfo, which tracks features that WhatsApp is testing across platforms. Read more...