The Samsung Galaxy S3 launched in the UK and 27 other countries worldwide on 30 May, with the 16GB model available everywhere and a 32GB version, which is being sold exclusively by Vodafone for the first four weeks.

Although not yet available in the US, Samsung hopes to launch the Galaxy S3 there and in 143 other countries across 295 different mobile carriers by the end of July.

The Galaxy S3 has a 4.8in touchscreen and features what Samsung is calling a "natural language user interface", which enables the smartphone to track users' eye movements so that the screen does not turn off when they are looking at it.

Powered by a quad-core 1.5GHz processor and running Android 4.0.4 Ice Cream Sandwich, the Samsung Galaxy S3 is set to be one of the most powerful smartphones of the year.

We got hands-on with the S3 at its London launch party earlier in the month.