I have had the same problem with faxes that are converted to a PDF image, but I found a solution that I can share with you. There is a company called Dochawk which has a program (in beta testing) which I am using & this is how it works: when I receive a PDF email to my BB 7250, 4.0, I then forward it back to them & they convert it to a readable text which you can view on your device. You can zoom in, out etc & it works really good & is very fast.
You can contact Les at:
and tell him trucker refered you.
I hope this helps you out!