I have a Cingular 8525 running Blackberry Connect 4.0, and it works like a charm. I also have a "weekend phone" which is a Nokia 6822. When I go in and change handheld, I get an error about the device only supporting 3 mailboxes. I only have 3, but deleted one anyhow then switched devices. I get yahoo mail fine, but not my BES mail. I check on the BES server, and the PIN has not changed there. Of course there is no way to change it. I have synched via cable ok. It would seem possible to swap back and forth between devices. Any suggestions?