I've just got the HTC Inspire and have a very weak 3G signal at home which the phone sporadically picks up. If I make calls when it has picked up 3G and the phone switches during the call to the stronger 2G signal the call drops out.
I had the same problem with my iPhone on the same AT&T network and got round it by turning 3G off when at home. However I can't find a way to do this with the Inspire.
Does anyone know how to turn off 3G with the Inspire or has an alternative workaround?