It is even more troublesome when we have limited data left, and we start wondering about that even though we haven't used the apps, how the data got over. It is only because of background data. But practically there aren't any ways or third party apps to help us on that without rooting.
However, there are a few firewall apps available that can bar the access to the internet for applications of your choice. These apps use VPN to perform the task. Here, we have listed down 4 such helpful apps that will certainly help you to save your mobile data.
Avast Mobile security and Anti-virus
Not all are aware that this leading PC anti-virus brand provides Android smartphone users the ability to block background data access to applications. You can get this application for free from google play store. The feature is known as 'Firewall'. You can edit the permission of data-consuming apps like Facebook, Twitter, or any app.
As the name suggests, rooting is not at all required in order to firewall the apps. You'll get to see three tabs on the app's interface such as home, pending access and apps. While pending access depicts the apps that require your attention for internet access denial and permission of apps, the Apps tab shows you the list of all apps that have permission to the internet. Get the app from here.
You can also custom filter with NoRoot FireWall by choosing between internet access denial on mobile data, and not WiFi internet.
NoRoot Data FireWall
This is another app that allows you to block the internet access of the apps without rooting. It has an option for blocking only the background data, and not the foreground.
You can also check data usage per app, check the history, and set permission for a limited time. NoRoot Data FireWall comes with a no image mode, where you can block image or any media file from getting auto-downloaded.
DroidWall - Android Firewall
This is one of the most preferred solutions if you don't have an unlimited data plan, or just wants to see your battery lasting longer. This app is made for unrooted smartphones for limiting the apps to use WiFi or cellular data.
For the advanced users, it also allows you to manually define custom iptables rules. but in case if you don't want the app in your phone, remember to disable the firewall before uninstalling, otherwise you won't be able to access the internet till you reboot your device.