I have the Google Play Movies app installed on my Nexus 7 and stream my library over WiFi with no problem. This app is cool and I wanted to try it out on my phone. I installed it to my Rezound and my library streams fine over WiFi but over 4g I get a "cannot play error 31". Anyone know if Verizon is blocking streaming of this app or is something broken with my account maybe? Sent from my stock rooted ICS Rezound using Droid Forums!