I'm looking for a fax application that will let me open PDF files, have a customer sign it with their fingers on the iPhone, and then fax it. Also if I could attach other documents such word files and edit them would be helpful too, though not necessary, does this app exists or does anyone have any suggestions? I tried ifax with sign it, but neither of those programs are working for me. Any help would be appreciated. Edit: also not sure if this can ba done, but also is there a fax program that uses your cell phone as the fax line like a normal fax machine does so you don't have to pay per use or a monthly subscription? Also not necessary but would be nice.