I just got the PPC 6600 and they have fixed the Bluetooth issue when using as a modem. I now can use it with my M205 Tablet and connect to the internet for long periods of time with out it disconnecting like the PPC-6601. By the way the 6601 has the 2300 for the bluetooth and the 6600 has the 3500. This is great it was fixed now hopefully the dreaded beep has been fixed also because the 6601 would happen once in a while.