Is there any app to Lock up my FaceBook, Whatsapp, Messenger and other important apps which may leak my privacy from my phone i'm currently usig Samsung Galaxy On7 With Android v5.1 (Lollipop) OS. I heard about so many apps like
Smart AppLock (App Protector)
AppLock 2 (Smart App Protect)
AppLock
LEO Privacy Guard - Lock&Boost
Which one should i select?
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Any App lock for my Samsung Mobile Phone?