The Netherlands Forensic Institute (NFI) reported, that they cracked PGP encrypted emails on some Blackberry devices.
They used UFED4PC version 4.0.0.220 for it.
Investigators were able to recover deleted messages and read encrypted messages, but not all of them, according to the report, only 279 out of 329.
What is more, the messages can be decrypted only with physical access to the device.
More info here.
