My accounting program sage sends a pdf document of a direct deposit form every week to the employees. The Sonim cell phones (android based) can not open up the document. It says this "Error. the document cannot be opened because it is not a valid PDF document." I have the adobe reader on the phone. I can open up this document on my computer through my email no problem. Once I open it up on my computer and forward to my email on my phone it can be opened but not directly from my accounting program to my email. The file size on my email on the computer is 7.5 KB but the file size on my phone says 48 B PDF. What does this mean and why can't I open it?
I assume that, when you are opening the document on your computer its opening up as its running on runtime program which is not the same case for mobile (Android) device.
In this scenario, you need to check with the vendor about its configuration, who developed the accounting program sage.
That why its not supporting the mobile device or what needs to be changed in the program settings, so that when try to open document from your accounting program it should work.