Samsung refreshed its lineup of tablets and smartphones at Mobile World Congress in Barcelona this week.

It launched the Galaxy S II smartphone which is equipped with a dual core processor and a 4.3 inch screen.  

The camera on the back of the device is 8-megapixels and the front has a 2-megapixel camera.

Samsung has also added NFC or near field communications, with the most talked about application being payments. Users could wave the phone in front of a payment system at a store and have money deducted from their accounts without having to deal with cash or a credit card. The Galaxy S II will start shipping in some markets in February, but pricing details weren’t disclosed.

Samsung also showed off the Honeycomb-based Galaxy Tab 10.1. It too got a dual core 1Ghz processor and now features a 10.1-inch screen. Like the Galaxy S 2 the upgraded Tab also has a 8-megapixel camera on the back and 2-megapixel camera on the front. It will start shipping in some markets in June, but pricing was not disclosed.