Trouble while trying to download file in mobile version (Android)

I expirience difficulties when trying to download an attachment in the mobile version (in particular in jpeg format). Now, in order to save the image, you first have to open it in the editor and then save it, and the editor often is not responding and does not open anything, since the picture may be too large, for example, or has an unusual format for it. Perhaps there is a Download option, as in Normal application or is it possible to add such a button for downloading? If i could download the file, I can safely send it via skype, watsapp and any other applications, for example attach a file to a letter and can also look it up in my gallery. When I try to use the wrike function and by clicking the share button I select one of these applications, for example yahoo mail, then I automatically create a new letter, although I wanted to attach this file to the existing correspondence with the client, and not create a new letter . It turns out that to do this, I need to open the file first in the editor, then save it and only then I will be able to do what I've planned. Why not give a choice and do not add a download button? Especially, as far as I know, in the version for ios such button already exists.