I believe the idea is that autodisconnect disconnects the network connection and then set's itself back to 2g mode to save power, the auto switch 2g/3g-dual is what type of connection autodisconnect re-connects on as an example, it disconnects and reverts to 2g, you open a browser so autodisconnect "auto-switches" to whatever setting you have, this can be 3g or dual it will wait x" and will then connect to the connection.

x" beleive allows you to set the waiting period between the change in reciever to the network connection, I have noticed that it takes me about 10" to get signal when switching to dual from 2g, so autodisconnect sometimes has problems re-connecting...

I hope I have that all right....

HtheB Im not sure on how to get autodisconnect to switch to 2g maintaining the connection...