Block All Android Apps Internet Access without Root. You can Block internet access to Android Apps. You can also block internet to all apps without root.It’s an illusion. InternetGuard uses your device’s VPN package to create a firewall. As every data packet sent or received by your apps passes through the VPN, all the incoming and outgoing data traffic gets attributed to InternetGuard.
The good part, however, is that InternetGuard now comes with its own Data Usage feature which allows you to check data usage for each app. To view the usage, choose Data Usage from the home screen.This app is based on VPN interface, which is the only way to implement the firewall on no-root devices. It works as the proxy between the common apps and the servers. The app doesn't steal your data or send even one bit of its own.

Features
- Simple to use
- No root required
- 100% open source
- No calling home
- No tracking or analytics
- No advertisements
- Actively developed and supported
- Android 5.1 and later supported.
Using Method
With SecureDNS, you take control of your Internet experience and bring it back to what the Internet was intended to be a fast, safe, private way to connect digitally. SecureDNS blocks those annoying advertisements, stop anyone from tracking you, and protects you from all sorts of “badware” like viruses, ransomware, and phishing schemes. You turn it on and forget about it. Web pages will load up to ten times faster without all those annoying ads, batteries last longer, and you can feel safe knowing that your internet services.
Important
Provider isn’t tracking you. Plus, attempts to send viruses, ransomware, phishing attempts, internet-hijacking, and other malicious attacks will be stopped in their tracks before they ever get to your mobile device. And, by blocking all this unwanted traffic from being sent to your phone, you may see your data usage cut by almost half, potentially saving you lots of money on your cellular bill.