Side By Side Comparison of Micromax X102 and Karbonn A4. Compare Processor, display, RAM, Storage and other features here. You can quickly compare Micromax X102 and Karbonn A4 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 X102 and . You can also look at each hardware feature individually to perform your analysis while comparing mobile phones.