BlackBerry officially started selling its first Android-based smartphone called Priv through AT&T on Friday for a starting price of $699 (off-contract). The security-centric touchscreen phone notifies users every time an application wants to access data or use the camera. It features a 5.4-inch screen, an 18MP rear camera, a Snapdragon 808 processor, 3GB of RAM and a slide-out keyboard.