On iPhone/iPad I would like the ability to download bank statements or other files in 1Browser to Dropbox. However there does not seem to be that functionality. This is easy to do in iOS Safari (Open in...). However, if you have a number of sites you want to visit then you need to keep going back to 1Password and entering a password each time.
This same feature was requested in the following two closed posts from about a year ago and in each case received positive replies. I think this would be a strong addition if the 1Browser is going to be supported moving forward.