How to disable Lock screen PIN 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. DISABLING LOCK SCREEN PIN SECURITY
c). Tap on Lock screen and then tap on Screen lock as shown below.
d). Now enter and confirm the saved PIN screen lock.
e). Tap on None to disable PIN screen lock.