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Mobile Minutes: Google’s wireless service; BlackBerry’s security offering; Yahoo’s mobile ads; WhatsApp and calls

BlackBerry introduces security offering for IoT devices
BlackBerry Ltd said on Tuesday it is launching a new certificate service that will help bring the security level it offers on smartphones to a slew of devices from cars to smart meters.
Read more on Reuters

Yahoo shows growth in mobile advertising, but results miss estimates
The Internet company reported first-quarter financial results that showed strong growth in newer areas like mobile advertising. But costs rose even faster, depressing profits.
Read more on New York Times

Facebook’s WhatsApp will be how the world makes phone calls
WhatsApp is the world’s most popular smartphone messaging app, letting more than 800 million people send and receive texts on the cheap. But it’s evolving into something more.
Read more on Wired