Has anyone experienced an issue with their Note 5 regarding the phone not locking during calls automatically? I have my settings set that my screen is turned off and locked with a press of the power button. Sometimes during a call when the phone is by my ear and the screen goes black, it comes back on and my face starts to open apps, browsers, etc. I also noticed that the notification pull down tray can be activated from the lock screen. Is this normal or is there a way I can disable this as well?