t is the little things that give you a good user experience on your mobile handset. These features are a joy to use. It is easy and compelling to use a particular device and its operating system.
iOS - Tap the title bar to scroll to top of the window -
The small screens on mobile devices mean a lot of scrolling down long windows and on most of them that means having to scroll back up to the top of the page. This is a tedious process on most platforms but not iOS. Apple has built the ability to auto-scroll back to the top of any window by simply tapping the title bar in any app.
Android - Double-tap home screen button to see thumbnail previews of all home screens -One of the greatest features of Android is the multiple home screens that can be customized. It varies from gadget to gadget but it’s not unusual to have as many as seven home screens that can hold all sorts of widgets and icons. While not every gadget enables the ability to double-tap the home button and view thumbnails of all of the home screens floating on the display, most do, or you can use third party launchers that add the feature.
iOS/ Web OS - Take screenshots with key combinations - It has long been possible to do this in Web OS and iOS by tapping the power button and home button at the same time. Android has long needed this, and finally catches up to the other two with Ice Cream Sandwich.
Android/ iOS - Drag app icons on top of another to organize them into folders - Multiple home screens make it possible to have loads of app icons available but putting similar apps in folders makes better use of the small screen. This has been possible on iOS devices for a while, and with Ice Cream Sandwich
iOS- Notification Center settings - Android pioneered a good method for displaying notifications when they arrive but the settings to control what is displayed is buried inside each App. Apple finally added good notifications to iOS5 and they made them better.