Microsoft has released the fourth Windows 10 Mobile Preview Build (10136) with few changes – Cortana improvements, Photos and Camera, easy use of big devices with one hand and as expected, few user interface tweaks. Much like double-tapping on the Home button on the iPhone 6 and 6 Plus that allows you use your device with one hand.
The Lumia Camera Beta app on the Lumia 640, 640XL, 930, Icon, and 1520 is now the Windows 10 Mobile Camera app. The new Photos app now supports double-tap to zoom on a photo and easy scrolling to older photos via the Months tag. The mobile has been made better that you will be able to upgrade directly to the latest to the build in a single hop regardless of which Windows Phone 8.1 build you’re starting from