Samsung Tab 4. Running Android 5.1.1. Rooted. In Settings/General/Date&Time, I've disabled auto-update of time by removing the checkmark ✔ from the "Automatic date and time" box. I change the date to Jan 1, 2036. And the time to 01:00 AM. Why does the date and time still revert to the current date and time (i.e. March 19 2017, 2:34 PM) ? The auto-change doesn't happen right away. More like after a minute.