Tablet users eager to hop on the BBM bandwagon with BlackBerry's standalone app will have to tamper down their enthusiasm. Vivek Bhardwaj, head of the BlackBerry Software Portfolio, told TrustedReviews that the company will focus exclusively on smartphones running iOS 6 and Android 4.0 or above for this summer's launch. "Smartphone is our real focus and again it comes back to what BBM is. If you look [at] BBM and the engagement and the activity, it's because it is mobile, because people are on the go," Bhardwaj said