We were over on Rt. 59 in Naperville this past weekend, and my wife could hardly connect or keep a call going. However, the next day we were on I-80 heaed towards Iowa and calls connected regularly, with no issues. There no one, consistent behavior that we have seen, just general service problems. However, I am seem sporadic 'upticks' in 3G speed around the Joliet / Plainfield area.
We were so frustrated, I called and complained & threatened to drop my service a third time a couple of weeks ago. We have a two line account & my wife's BB is droppping calls regularly, probably a combination of a device issue and NV upgrade / backhaul work. They credited our account this month and for several future months since we've been seeing the issue regularly since Februrary and then sent us an Airwave device to use in our home. We haven't connected the Airwave yet because we spend more time away from home and she needs something more reliable in the chicagoland area as opposed to solely working at home.