Recently we had an update to KitKat for the Galaxy S3 and since I have had numerous issues with inability to upload or download to many apps (including Verizon's), and having issues with my side key (power off/on/sleep/wake up). This key will no longer put the device to sleep and instead will freeze momentarily, go to the lock screen and prompt multiple times to power off or restart the device. I know this sounds like a hardware issue but this phone has spent it's life in an Otterbox and was working properly albeit slow prior to the KitKat update. Any ideas?