South Korean consumer electronics giant Samsung presented Sunday a new version of its tablet computer with a larger screen of 10.1 inches, four months after launching its first Galaxy Tab.

The Galaxy Tab 10.1, which uses the latest version of Google's Android operating system, weighs 599 grams (1 pound, five ounces) and is just 10.9 millimetres (0.43 inches) thick.

Samsung's first tablet, the Galaxy Tab with a seven-inch screen, was launched in October.

The South Korean company also unveiled its latest smartphone on the eve of the opening of the mobile phone industry's annual conference in Barcelona.

It presented the Galaxy S II as "the world's slimmest smartphone" at just 8.49 millimetres thick.

The head of Samsung's mobile division, JK Shin, said they focused on "screen, speed and content" while developing the phone.

The Galaxy S II is equipped with voice recognition that allows users to dictate text messages instead of tapping on the screen.

It also includes NFC or Near Field Communication technology which allows for make secured transactions by swiping their phone near a receptor, such payments for riding on public transport.