Side By Side Comparison of Acer Liquid S2 and ZTE Nubia X6. Compare Processor, display, RAM, Storage and other features here. You can quickly compare Acer Liquid S2 and ZTE Nubia X6 smartphones just by looking at their ratings and results showing "winner" and "runner up." There is also a short analysis comparing different features of Acer Liquid S2 and . You can also look at each hardware feature individually to perform your analysis while comparing mobile phones.