Microsoft Mobile Services are a set of proprietary mobile services created specifically for mobile devices, they are typically offered through mobile applications and mobile browser for Windows Phone, Android, iOS, BlackBerry, Nokia /block/deny/405platforms, BREW, and Java ME. Microsoft's mobile services are typically connected with a Microsoft account and often come preinstalled on Microsoft's own mobile operating systems while they are offered via various means for other platforms. Microsoft started to develop for mobile computing platforms with the launch of Windows CE in 1996 and later added Microsoft's Pocket Office suite to their Handheld PC line of PDAs in April 2000. From December 2014 to June 2015, Microsoft made a number of corporate acquisitions, buying several of the top applications listed in Google Play and the App Store including Acompli, Sunrise Calendar, Datazen, Wunderlist, Echo Notification Lockscreen, and MileIQ.