File Upload and EXIF in mobile Safari

I can tell you right now that with my iPhone X and IOS 13.3 (current) the exif data is stripped if I use the default Settings->Camera->Formats setting, which is 'High Efficiency'. But if I change that to 'Most Compatible', the EXIF data is not stripped. These results are consistent if I do not manipulate the photo at all on my phone before uploading.

It looks like photos that are shot under 'High Efficiency' mode do upload with EXIF data if they have been edited on the phone first - but I have not done extensive testing to verify if this is always the case or under what conditions this always works.

Little hard to understand your use case here, but if the idea is to show EXIF has been removed (or not) when a user uploads a file from inside your app, you could inject a script to include this library https://github.com/exif-js/exif-js and then show the result of the EXIF data in a UIAlertView?