I have a Samsung Galaxy S4, software up-to-date, and am having issues with significantly decreased signal strength. Many times I am getting zero reception at my friend's house and in other areas as well. My reception is fine in my apartment, however, in older buildings it seems to decrease significantly from 4G to 1X. I bought this phone back in August 2013 and have swapped it out twice due to WiFi problems. Even at work when I'm outside (I work in a hospital), my reception is very poor. Is there a fix for this? My fiance has the same problem with his S5. Is this just a Samsung issue or is it a Verizon issue?