Sony has been making steady progress over the last couple of years as it tries to regain lost ground in the smartphone market.

The basis of this progress has been the Xperia Z range of smartphones. The company launched its Xperia Z1 Compact in February, but is already back with this year's flagship model - the Xperia Z2 - which is hoping to build on the success of the Xperia Z1.

But with the Galaxy S5 and HTC One M8 already on the market, can Sony's angular design, waterproof credentials and top notch camera sway customers in its direction?