This recently released research paper: Data Security on Mobile Devices: Current State of the Art, Open Problems, and Proposed Solutions by Matthew Green and his team which is also covered by WIRED talks about design flaw in data encryption of android and iOS. Wired brushes off most of the technical details and the paper didn’t cover android’s File Based Encryption very well which I think needs some clarity on it. The paper draws the correct conclusion though and what should be improved in successor android versions.