I have had this phone several months now and it just doesn't seem as reliable as my Nexus 4 or Nexus devices in general. I keep having weird things happen. Screen blacking out during calls, weird messages from the play store telling me to add a recovery email and now Gmail is never notifying me of a new emails. No sound, not status bar icon, no led. It works on all my other devices. Is anyone else experiencing weird problems with their S4 GE? I would really like to fix the gmail thing if anyone has a suggestion. Most of the issues have rectified themselves over time but its annoying. My Nexus 4,7, and 10 never have a single issue and run more or less the same software.