Android 4.0: Ice Cream Sandwich 

Ice Cream Sandwich is the step forward Android has been crying out for. It's slicker, faster and more intuitive than ever before, and Google should be applauded for improving an already decent system.Google said that this is one of the biggest overhauls of the operating systems since it unleashed the Android project three years ago.

From enhanced contact menus to improved keyboards and NFC capabilities, even the most ardent Android users will have to spend some time getting used to the new OS - so let's dive in.

Interface

The most noticeable change with Ice Cream Sandwich is the interface - it might follow the same principles as the Android of old, but the way it's used is radically different in a number of ways.Android 4.0 is designed to work without buttons

It has a Tron-like blue theme that pervades throughout the OS and it also has the ability to unlock the phone simply by using your face. The other new addition is the dock at the bottom of the screen - this stays on every home screen, and like iOS can be altered to contain the applications you like to tap away at the most.

The other big change is widgets have been brought to the fore: you can now look at each one on the menu screen without having to actually select it. 

Google is clearly also thinking about giving users more ability to enjoy apps than ever before by putting a link to the Market in the top right hand corner of the menu screen.