I was trying to access the RTM menu of my SGS3, but the dial code does not work, so I installed the Hidden Menus app (id org.freespirit.hms on Play Store) in hope it will give access to it.
In the app I accidentally clicked this item:
Nothing happened immediately, but after a few seconds the phone vibrated for about a second, but the screen was already blanked.
After turning the screen saver off, the Hidden Menus app was visible again.
Does anyone know what that menu is supposed to do?
I have stock Android v4.3
phone is Samsung Galaxy S3 with 64GB
FCC ID: A3LGTI9300A