iphone iOS 7.0.4 won't open/download/save email attachments

I just bought the a new iphone 5s running iOS 7.0.4. I cannot open, download or save any email attachments. This is critical in running a business when I need to view an image or document when I'm out of the office! It works perfectly fine on my old phone running iOS 6. There seems to be a lot of people with the same problem and no fix yet. Disappointing to say the least. Apple, when will you be fixing this?