I have an iPhone 6-plus. I've got 48 GBs of memory free. I've had a similar crashing problem for about 6 months now. In my case nearly every time I try to take a picture of a of full size page 8.5 X 11, after the image appears Evernote crashes while processing the document. However in my case Evernote has never crashed if I have auto document processing off. So I've discovered a work around which has never failed for me. I turn off auto document processing, take the picture by hand (I have to click the shutter just like my camera). Then when I save the document I choose document or color document and Evernote does the processing that I've so come to appreciate. It's not as slick as the auto mode, but so far it doesn't crash when I do it that way.