Why are all apps disabled? All of my apps are gone.  All of the built-in, external storage apps had disappeared.
It happened when my phone's battery was dead, and when I turned it on after charging, everything was gone.  I can see my apps in the application manager but it shows that all of the apps are disabled and I can do nothing.
I cant even add a picture here.
Phone: Samsung Galaxy Grandneo Plus
All I know about "disabled apps" is when the device is booted into Safe Mode.

Maybe your device is on Safe Mode.&nbsp;&nbsp;This happened, when you "accidentally" pressed a button on your device while booting up.&nbsp;&nbsp;Try checking, if it has a "Safe Mode" displayed on your screen, usually at the corners.

Rebooting the device normally would surely fix the problem.