WhatsApp has begun testing a new feature on iOS devices that allows users to send text messages with a one-time view option. This feature aims to enhance privacy and control over the content sent between users. According to the new feature, the sender can send a message that the recipient can only read once; after being opened, it automatically disappears and cannot be accessed again. To activate this feature, simply press and hold the send button, then select "Send as one-time view."