I've been using this device at the same location (work) for months now, but since last week I've been getting a lot of dropped calls. The phone has the latest update, I'm not using advanced calling features, and I'm in an area with 4G LTE service. My phone is a Galaxy S5, but a coworker is having the same issue with an iPhone, so I believe this is a network issue. The area code is 53202. When not dialing, my phone has 2 bars. When I dial a number, I suddenly have full bars. Eventually, the call will drop and I will again have 2 bars. What can I do to get this resolved? It's starting to affect my job.