Side By Side Comparison of Oppo Find 7a and Oppo A31. Compare Processor, display, RAM, Storage and other features here. You can quickly compare Oppo Find 7a and Oppo A31 smartphones just by looking at their ratings and results showing "winner" and "runner up." There is also a short analysis comparing different features of Oppo Find 7a and . You can also look at each hardware feature individually to perform your analysis while comparing mobile phones.