There no screen recording in samsang a 30s

Lock for apps 

My mobile was slow and very high lag can you help me

I can on the mobile data but the device can shown as There is no network connection connect to a network and try again 

Lock for apps There is not have any security for apps in Mobile There is not have any system security for apps and the samsang not provided the lock to the app and another devices have the applock to There Mobiles