Thanks for the comments.
I find the quality of the files from those tiny little plastic phone lenses to be infuriatingly good. I often use my phone set to the monochrome sensor as a sort of polaroid to check the composition and suitability of the scene for B&W before I use up a frame on my MF camera. All too often the 'polaroid' comes out better than the film version, the files are easily comparable with 120 film, with an impressive front to back sharpness due to the small sensor and the built-in stabilisation. I couldn't have used my film camera in these shots at all without a tripod. It's all a bit annoying really. But then the experience of taking and processing phone shots is rather hollow and unsatisfying, whilst getting a successful film frame is far more engaging and satisfying.