Depends on your phone but here are some tasks I have done via Bluetooth on my phone, paired with a headset, use phone as a modem to access the internet, transfer files to/from PC, played music to a remote device.
I got this from an on-line manual for your phone:
This device is compliant with Bluetooth Specification 2.0 + EDR supporting the following
profiles: generic access, generic object exchange, hands-free, headset, object push, file
transfer, personal area network access, dial-up networking, service discovery
application, SIM access, and serial port. To ensure interoperability between other
devices supporting Bluetooth technology, use Nokia approved accessories for this
model. Check with the manufacturers of other devices to determine their compatibility
with this device.