Also Read: WhatsApp Gets Massive Update
Jan Koum went on saying that the messaging service delivers more than 30 billion messages daily, from emojis to images to text.
WhatsApp, which was acquired by Facebook last year, has promised to focus on voice services in order to compete with its counterparts, such as Viber. In the past few months, the service added a lot of interesting features, such as encryption to conversations and chat archiving.
The service reported 600 million users in August and 500 million users in April 2014.
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