When I search the coverage map for 4g on the verizon page, it shows signal as very strong (Dark Red color) for both my home and work location however I am constantly getting 3g instead. My home zip code is 95758 and my work zip code is 95833. I am experiencing very weak signal at work and often times no signal at all. My texts will sometimes send and sometimes it will be pending while searching for signals. Calls will occasionally drop due to the weak signal.. What can I do to increase my signal strength? I am growing weary of waiting for the phone to find a signal..