Best Cell Phones - upgradable to v4.4.4 (KitKat) Operating System, Business

'Unbeatable price-to-performance ratio.'

'Top-notch specs.'

'Superb value.'

'high-end smartphone'

'1080x1920 pixels panel is of the laminated IPS-LCD variety, meaning a tight, bright, low-reflection package, integrating the touch layer into the display itself. '

'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.'

'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. '

'While the overall footprint of the Z Ultra is large the sheer thinness of the phone is very impressive. '