Use APKPure App
Get Lock for whatsapp old version APK for Android
whatsapp के लिए लॉक घुसपैठिए से अपने चैट सुरक्षित है।
*****We Promise*****
Lock for whatsapp will just protect your WhatsApp. It won't change any of your WhatsApp's information. And some app's permission like access to internet is just for the ads needs.
*****NOTE*****
This APP has nothing to do with WhatsApp company.
This application needs to get the device administrator privileges to allow the APP daemon to run properly, giving the user a better user experience.