Can you test this: Open Gmail app, create a new email, choose to Attach a file for the email.
- Can you choose/browse folders? I do not have an option to choose a folder any more.
- Can you choose other types of files than just photos, videos and
I use .gpx files and have had no problem with saving the, moving them around to different folders, opening them in other apps, or attaching them.
To test this as you suggested, I downloaded a gpx file, moved it to a temp directory on the sd card, and opened gmail. I created a new email, browsed the sd card within gmail and found the gpx file without issue.
Unfortunately, I don't have any suggestions beyond this. Other than with one or two issues that I had to figure out with some of the apps I use and Android 7, I do not know Android that well.