Side By Side Comparison of Micromax A57 and ZTE Open. Compare Processor, display, RAM, Storage and other features here. You can quickly compare Micromax A57 and ZTE Open smartphones just by looking at their ratings and results showing "winner" and "runner up." There is also a short analysis comparing different features of Micromax A57 and . You can also look at each hardware feature individually to perform your analysis while comparing mobile phones.