As stated above my Nexus has the android version 4.2.2, however, we originally got poor reception in our home and within the past month we now get NO reception in our home and in many other places as well. Not always in buildings and we are covered in 4G areas every place we go. I've seen people mention how they changed their phones back to 3G...can anyone walk me through this? It would be nice to be able to send and receive calls once in a while.