Ok, the problem is back. Here's the deal... When I'm in any other app, I have 4-5 bars on LTE. Steady, no flickering, steady signal. As soon as I click on the Play Store, the signal drops to nothing, zero bars and greyed out signal icon. And the app I'm trying to update just sits and spins while it says 'downloading' but nothing is actually downloading. So I've cleared the Play Store cache, the Play Services cache, cleared the entire phone cache via volume up, home, power, nada. The ONLY thing that works, for awhile, is uninstalling all of the Play Store updates. It will work until the update downloads itself again... rinse and repeat. Does anyone, anyone at all have this issue?!