Keep talking with N91
philippe146 has asked the Howard forums community if one can close the slider on an N91 without disconnecting a call which is in progress. Much to the delight of fellow community members, the answer's yes. Mayhs explains that this can be achieved by holding the top left button (the one above the green answer button) whilst closing the slider.
This is a fantastic tip, so click here to give Mayhs a pat on the back.