I live in zip code 55437 and have been a Verizon customer for almost 5 years. Over the last few months, I have started to get "Call failure" on almost every call that I make from inside my home. The signal strength inside my home is usually only 1 or 2 bars. I need to go outside to make or answer a call. This is not practical as this is Minnesota and in a few months the outside temperature won't be friendly. In addition to that, it is actually a safely issue because I am a senior citizen and if I needed to make an emergency call from my bedside, I wouldn't be able to succeed. What has happened to the signal strength over the last few months? To I need to switch carriers to get reliable service?