'The Sony Xperia Z1 looks stunning, it's a distinctive design and there's no questioning the quality of the build. '
'For normal media viewing everything looks great, but you really notice the difference when watching or viewing full HD 1080p content where, as with the Xperia Z, everything takes on an incredible and cinematic, almost 3D-like quality.'
The next level of Sony's Android ambitions or a needless mid-cycle vanity upgrade?
Dedicated camera button for underwater shooting
'all key are easy to feel and press without looking, with deep and clicky feedback to them.'
'Noise cancellation worked well in my tests, as the Z Ultra blocked out a good amount of loud street noise, but I did notice a persistent hiss. '
'It's almost impossible to reach anything in the top half of the display or on the opposite side to your hand.'
'While the overall footprint of the Z Ultra is large the sheer thinness of the phone is very impressive. '
'The Acer Liquid S2 is a great big phone with lots of features and good core specs. '
'The real star of the show when talking about the Acer Liquid S2 is the 13MP camera, capable of 4K UHD video recording. '
Acer’s phablet gets a speedy specs upgrade