provided you are not using mac.
you can't even sync the calendar or contacts, i had to pull my pc that i have not used in years, out of my basement, connect all the cables, just so i could upload my contacts. freagn bs. my razr syncs beautifully with mac, so so easy. the blackjack fails at the simplest tasks, someone has already written a patch, charging $40 for the software(called, "missing sync" for mac), that works really well, and samsung still has no updates for their mac customers. stupid, just stupid. its getting returned just as soon as the iphone is out or i might just go with a blackberry, great reviews all around, and completely compatible with mac, or at least with what i need them to be compatible with.
for something that only took 3 minutes to do when i first got my razr, managed to take a good 3 hours on the blackjack. the phone is pretty neat, just not compatible with stuff. maybe thats why all the refurbs are being sold on cingular.com
the bluetooth will pair, however no features are available, only modem. so, you can use the phone as a modem via bluetooth with mac(unless you want to pay for a third party software, that should be included) and thats it, no file transfer, no calendar with three months of scheduling can be synced, nothing. and the third party software isn't exactly solid atm.
and the connectivity is stupid, they make earbuds, only one pair, and no aux jack, the same freakn thing, but they just are not making an aux cable available. samsung put a "new" type of plug on the phone. could have used a common data cable just like the common plug used on usb hubs, razrs, a lot of other stuff.
the blackjack will unnecessarily nickel and dime the buyer on top of stuff your going to have to buy anyway(that makes sense) like a microsd.