NoRoot or Mobiwol if you don't already use a VPN. Netguard or Droid Firewall if you do.
AFWall+ is better than all of them, but requires rooting your phone. Check your local statues to understand possible legal implications of this. In the US, it's currently legal for phones, but possibly not tablets, though a few years ago it was not. Usually this will also void any warranty.
Fun fact: No one has ever been charged with rooting an Android device in the US.
Any recommendations?
NoRoot or Mobiwol if you don't already use a VPN. Netguard or Droid Firewall if you do.
AFWall+ is better than all of them, but requires rooting your phone. Check your local statues to understand possible legal implications of this. In the US, it's currently legal for phones, but possibly not tablets, though a few years ago it was not. Usually this will also void any warranty.
Fun fact: No one has ever been charged with rooting an Android device in the US.