Voice Messaging is the newest addition to Whatsapp's feature set, allowing users to send audio messages of unlimited length to their contacts. From within a chat, simply hold down on the mic icon to begin recording, and let go to instantly send. On Blackberry devices, the same is achieved by holding down the Space bar, and Nokia users will have to hold down the center button. To cancel, slide from the mic button to the cancel button. Once sent to the recipient, the app can play the audio through your earbuds, phone speaker, or loudspeaker. Unlike images and other media files that can be attached to a WhatsApp message, voice messages will always be downloaded by the recipient's phone, whether it's on WiFi or not, so be considerate about the length of your voice messages on the off chance you're chewing through your contact's data cap!
Is this a signal for things to come for WhatsApp? You can already send media and images, with voice messaging, is VoIP that far behind? We'll see.