How to enable Lock screen Password security in Samsung Galaxy Grand2(SM-G7102)?
STEP 1. GETTING STARTED
a). Tap on Apps as shown below.
b). Now tap on Settings icon and then tap on Device option as shown below.
STEP 2. ENABLING PASSWORD SECURITY
c). Tap on Lock screen as shown below.
d). Now tap on Screen lock.
e). Tap on Password security as shown below.
STEP 3. ENABLING LOCK SCREEN PASSWORD SECURITY
f). Enter at least 4 digit alpha-numeric password and then tap on Continue.
g). Re-enter the same alpha-numeric password and then tap on OK as shown below.
h). Password sercurity is now enabled in your device.