“Google voice there was a network error while trying to sign in”

About six months ago I gave my wife my old Galaxy Nexus phone. When I gave it to her I didn't wipe it clean, I just added her username to it. For the past month she had been complaining that her phone was getting a worse and worse signal. She claimed that internet access only worked on wifi and that all other data was out the window as soon as she lost a wifi hotspot. I played with a bit and initially I thought she was wrong because I was able to get data using the cellphone (turning wifi off). I explained to her that we lived in a very remote area where cellphone data was spotty and that once she got