Thanks for the pics and info on the Blackberry.
I'd like to point out that the Blackberry's main power button is on the front of the phone, as opposed to being on the side. It's the red hang-up button. IMO the dog could easily step on that to turn the phone on. Like I said in a pervious post, when you turn on your phone a notification may pop up about new voicemails and one press on the trackball in the middle of the phone would probably dial it.
There was also question of why the voicemail calls post-disappearance appeared differently on the call log and I have a theory for that as well. While still alive, BJ probably dialed *86 to check his voicemail. I have mentioned that if the dog made the call, it would have been through a notification of some sort that told you there's new voicemail(s) and asks if you would like to check them. I'm betting that when you dial VM that way, the phone just dials it's own number, instead of the *86 (or whatever his carrier uses for VM) like BJ had been dialing.
Those "weird" VM calls showed up as BRISTO, OK on the call log. I don't have BJ's phone number so I can't verify this, but I would bet that his phone number was registered or originated from Bristo, and that's why you see Bristo on the bill.