When we turn on data access (by mobile data or by wifi) in an android phone, all applications start Internet access and almost all applications like whatsapp, facebook, twitter start notifications.
I read many articles to prevent desired applications for Internet access for certain time.
I found two options; it can be done after root access of an android phone or by using some applications like NetGuard. Almost all applications use VPN for this purpose.
Without rooting an android phone and without going through for VPN, I want to prevent desired applications for Internet access for certain time.
Pls let me know what I need to do?