The SIM-free version of the water and dust proof Samsung Galaxy S4 Active has just gone on sale in the United Kingdom. The tough smartphone has been available through a few carriers for a few weeks now, but it's only now that you can get it without signing a contract.

The lowest price for the SIM-free and unlocked Galaxy S4 Active we were able to find is £486 via Clove. Other retailers are offering it at about £500, Carphone Warehouse is seeking £530 while Amazon UK is currently taking pre-orders at £676.

Samsung Galaxy S4 Active is a water and dust proof version of the Galaxy S4 flagship with a few downgraded features - an 8MP camera instead of 13MP and a standard LCD screen instead of a Super AMOLED unit.