Thanks, PC747. We'll see if vzw tells me the drops are to be expected when they call back. Their initial take was that it should be switching between 4g and 3g vs. dropping the connection. If it is a matter of the increased demand causing contention and resulting in temporary drops, I fear that network performance could only get worse as more folks upgrade to LTE-capable devices. I hope it is a fixable software deficiency. Some Bionic posters are reporting improvement after installing ICS from the wild.