Side By Side Comparison of Adcom KitKat A40 and Sony Xperia U. Compare Processor, display, RAM, Storage and other features here. You can quickly compare Adcom KitKat A40 and Sony Xperia U smartphones just by looking at their ratings and results showing "winner" and "runner up." There is also a short analysis comparing different features of Adcom KitKat A40 and . You can also look at each hardware feature individually to perform your analysis while comparing mobile phones.