I've googled this but have not found the answer. Can A iPhone 3gs handle streaming music via Bluetooth, navigation (Tom tom in my setup), and phone calls (obviously the Bluetooth music would cut off) and then answer the phone call? My current setup is my 3gs plays music through the car stereo's dock connector. I don't use Bluetooth for music and phone. The iPhone performs well with the Tom Tom software but I wonder if it can handle the bluetooh music stream. And by not being able to handle I would define that as locking up or crashing and rebooting.