Geotrust signing limiting access to file system for Nokia 6085

[#1]

When we use the Geotrust test signature to sign our application, the functionality to access the phone's existing media in the file system is restricted.  However, when a Verisign certificate is used, this functionality is made available.  No other handsets have exhibited this same behavior.  Is something particular with the Nokia 6085 that would cause this discrepency?

We are using JSR-75 to access the file system. 

[#2]

This is unusual, most third party authorities have similar abilities of access. I do not know what is unique about the Nokia 6085, but as you noted with other handsets, not typical. thanks, Ed