I have the Nexus 4, and using it to 'scan' pages isn't perfect. I noticed if I get up really close to the page, and keeping to within the boundaries of the page scan box, the image comes out blurry. Not sure why, I k now my phone camera can focus in real close, so it should not be an issue. Now, if I hold the camera further away to say where there is about 30% space around the boundary box, the image does come out sharper, but when I zoon in after to view the details of the page closer, the image is pixelated.