Android 4.0 "Ice Cream Sandwich" is a version of the Android mobile operating system developed by Google. Unveiled on October 19, 2011, Android 4.0 builds upon the significant changes made by the tablet-only release Android 3.0 "Honeycomb", in an effort to create a unified platform for both smartphones and tablets, whilst simplifying and modernizing the overall Android experience around a new set of human interface guidelines.
Simple, beautiful, beyond smart
Android 4.0 builds on the things people love most about Android that is easy multitasking, rich notifications, customizable home screens, resizeable widgets, and deep interactivity and adds powerful new ways of communicating and sharing.
Refined, evolved UI
Focused on bringing the power of Android to the surface, Android 4.0 makes common actions more visible and lets users navigate with simple, intuitive gestures. Refined animations and feedback throughout the system make interactions engaging and interesting. An entirely new typeface optimized for high-resolution screens improves readability and brings a polished, modern feel to the user interface.
Virtual buttons in the System Bar let users navigate instantly to Back, Home, and Recent Apps. The System Bar and virtual buttons are present across all apps, but can be dimmed by applications for full-screen viewing. Users can access each application's contextual options in the Action Bar, displayed at the top (and sometimes also at the bottom) of the screen.
Multitasking is a key strength of Android and it's made even easier and more visual on Android 4.0. The Recent Apps button lets users jump instantly from one task to another using the list in the System Bar. The list pops up to show thumbnail images of apps used recently tapping a thumbnail switches to the app.
New lock screen actions
The lock screens now let users do more without unlocking. From the slide lock screen, users can jump directly to the camera for a picture or pull down the notifications window to check for messages. When listening to music, users can even manage music tracks and see album art.
Quick responses for incoming calls
When an incoming call arrives, users can now quickly respond by text message, without needing to pick up the call or unlock the device. On the incoming call screen, users simply slide a control to see a list of text responses and then tap to send and end the call. Users can add their own responses and manage the list from the Settings app.
Improved text input and spell-checking
The soft keyboard in Android 4.0 makes text input even faster and more accurate. Error correction and word suggestion are improved through a new set of default dictionaries and more accurate heuristics for handling cases such as double-typed characters, skipped letters, and omitted spaces. Word suggestion is also improved and the suggestion strip is simplified to show only three words at a time.
To fix misspelled words more easily, Android 4.0 adds a spell-checker that locates and underlines errors and suggests replacement words. With one tap, users can choose from multiple spelling suggestions, delete a word, or add it to the dictionary. Users can even tap to see replacement suggestions for words that are spelled correctly. For specialized features or additional languages, users can now download and install third-party dictionaries, spell-checkers, and other text services.
Ice Cream Sandwich is specially designed for accessibility . The accessibility experience begins at first setup , a simple touch gesture during setup (clockwise square from upper left) activates all accessibility features and loads a setup tutorial. Once accessibility features are active, everything visible on the screen can be spoken aloud by the standard screen reader.
Rich and versatile camera capabilities
The Camera app includes many new features that let users capture special moments with great photos and videos. After capturing images, they can edit and share them easily with friends.
When taking pictures, continuous focus, zero shutter lag exposure, and decreased shot-to-shot speed help capture clear, precise images. Stabilized image zoom lets users compose photos and video in the way they want, including while video is recording. For new flexibility and convenience while shooting video, users can now take snapshots at full video resolution just by tapping the screen as video continues to record.
To make it easier to take great pictures of people, built-in face detection locates faces in the frame and automatically sets focus. For more control, users can tap to focus anywhere in the preview image.
For capturing larger scenes, the Camera introduces a single-motion panorama mode. In this mode, the user starts an exposure and then slowly turns the Camera to encompass as wide a perspective as needed. The Camera assembles the full range of continuous imagery into a single panoramic photo.
After taking a picture or video, users can quickly share it by email, text message, Bluetooth, social networks, and more, just by tapping the thumbnail in the camera controls.
Cloud-connected experience
Android has always been cloud-connected, letting users browse the web and sync photos, apps, games, email, and contacts , wherever they are and across all of their devices.
Uninstall Apps Right from the App Drawer
You can easily delete apps from your menu or your home screen , by long pressing icon of app and selecting delete or uninstall.
The basic difference between all the android versions from the previous ones that they come with some additional features , and improved UI and then the major factors which are considered to be improved more are increasing the battery efficiency and creating more energy efficient OS. They also improve many camera features which the users like the most in their smartphones. So every android version is the best version of its time but when we compare present feature with features of previous versions we see alot of difference between them. And it is improving and updating features till now.
Now wait and see what comes in next versions.
"Technology won't replace teachers , but teachers who use technology will probably replace the teachers who don't."
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