So, first I upgraded from a 7100G to the 8700C in the blue side. I then switched from the blue side to the orange side (for several reasons, such as rollover and Pocket Day Pro works better).

When I did so, I lost the old voice mail number and the new one given by support did not work, so I set it to dial my own number, entering * when it asked for the ten numbers of the party that I was dialing.

Then it stopped recognizing the *. I was then given a new number which worked fine. Then I noticed that in the call log, it no longer showed my number, but it stated My Number: Unknown.

It is set to Show "My Number". Does not seem to hurt anything, but what does that do, and is there a way to get it to show my number?

I had a similar issue after moving across country last year - BB still showed my old number even though the new number worked and the old one didn't. Try this:

Go to: Options > Advanced Options > SIM Card > (menu) Edit SIM Phone Number

you can also contact your provider and they will push a update to your sim card.

Yea i did have one so far that didn't seem to take the update. When I called someone the correct number would show but on the BB itself it still said Unknown. I edited the sim # right on the device and it's been fine.

Thanks, everybody!

thanks for posting this answer...i had the same problem and now its fixed thx to this thread.