After months of speculation about screen sizes, camera resolutions and design, the smartphone is finally here. The 3G version will be available from the end of the month in Europe before being rolled out to 144 countries total. The LTE version will be rolled out in June, according to Samsung.

The hardware specification is close to other high-end Android-based smartphones launched this year, including the already available HTC One X.

The Galaxy S III is powered by Samsung's quad-core 1.4GHz processor, which is based on the the ARM Cortex A9. It has a 4.8-inch super AMOLED screen with a resolution of 1280-by-720 pixels, which is housed in a shell that is 8.6 millimeters thick and weighs 133 grams.

"The display is really impressive," said Malik Saadi, principal analyst at Informa Telecoms & Media.

Storage capacity is either 16, 32 or 64GB which can be expanded via the MicroSD card slot. There is 1GB of RAM, an 8-megapixel camera and NFC, as well.