Just to add to the discussion, I have attached two screen shots. One is my home screen showing my 5 bar signal strength. The next , at the bottom, shows I do not have a connection. They were taken within 5 seconds of each other.
I Can not receive a call inside my house. If I attempt to make a call, the second I hit Call, the signal drops to where I can not connect. If I hit cancel, I immediately have 5 bars back with a signal strength of -70dBm.
For those having battery issues, you MUST TURN OFF your location toggle to save the battery.
However, I am not having any data issues as some have reported.

