I recently switched from a Droid Razr to the S4 and I just want to see if there see if this is a trend... granted, I work in a basement where the signal is not the greatest, but I have zero connectivity to the mobile network down there. With my Razr I had at least one or two bars all the time, so I cannot send or receive texts, make calls, etc. Has anyone else had these issues? My WiFi also frequently disconnects and reconnects, which is super annoying and frustrating.