Android app to block mobile data based on whitelisting?

Question

Android

Now I have set a tariff with the service " Free WhatsApp " on the Beeline number . Connected to this service. Disabled all internet packages. I left mobile data turned on just to make WhatsApp work. Since mobile data is turned on, many applications and services for their needs (weather, various updates, or just some kind of background information exchange) use the Internet and the balance is debited. Is there a normal application that would completely block mobile data transmission for everything on a smartphone (built-in services, applications, etc.) except for WhatsApp. I already installed the DataEye application и внес там в белой список WhatsApp, но баланс все равно ежедневно списывается неизвестно на что. Есть ли работающее приложение на Android, которое бы полностью запретило обмен мобильными данными, оставив в исключениях одно или несколько приложений по моему желанию?
*Версия Android 5.1.1

Answer 1

There is a "firewall without root rights", it works, I use it. That's what it's called.
In addition, money may not be debited for traffic, but for some kind of left services of the operator. It's also good to check...

Answer 2

DroidWall
AFWall+
or any other firewall.
(Of course you need root anyway).