Almost all Android applications require an internet connection. But do you know which applications are secretly using data in the background?

While you can toggle Wi-Fi or mobile data, controlling which apps are online isn’t easy. Some people reported that they have spent a lot on cellular data even though they do not use it. But if you enable Restrict app background data, it will block all apps and you cannot receive any notifications. That’s where no-root firewall apps come in. It can help you manage each app’s internet access without rooting your device. Maybe you are not familiar with no-root firewall apps, but they are quite useful for Android owners.

Part 1: What Is No Root Firewall

What is a no-root firewall? Briefly, it is an Android firewall app that can control which apps to access the internet without root, thereby protecting privacy and saving cellular data.

Key features of a no-root firewall

• Restrict apps' access to the internet. For example, it can prevent games from secretly uploading data and block ad SDKs from accessing servers.
• Protect users' privacy. It can prevent apps from secretly uploading user data, connecting to an unknown server, and tracking your behavior.
• Save cellular data.
• Reduce advertisements and tracking by disconnecting the advertising components from the network.
• Create a virtual VPN without root.

Root vs No Root Firewall

Part 2: A Quick Overview of No Root Firewall

Part 3: Top 7 No Root Firewall Recommendations

Αρχή 1: Τείχος προστασίας NoRoot

Βασικά χαρακτηριστικά:

• Permit or deny internet connection for a certain app.
• Control internet usage on Android tablets and smartphones easily.
• Get notifications when an app is trying to access the internet in the background.
• Create personalized filter rules based on IP address.
• Block websites to access your information or prevent your information from being sent to the internet.

Αρχή 2: Τείχος προστασίας δεδομένων NoRoot

Βασικά χαρακτηριστικά:

• Control the internet access permission for each app on Android devices.
• Available to both cellular data and Wi-Fi networks.
• Block background apps to use your internet connection.
• Record and analyze data usage for each app separately.
• Notify you when an app starts using the internet.
• Schedule the internet usage of apps, such as how long.

Κορυφή 3: DroidWall

Βασικά χαρακτηριστικά:

• Control the internet access for each app on Android devices by a white list and a black list.
• Grant only Wi-Fi network or cellular data permission to a certain app.
• Apply rules for HTTP, HTTPS, SSH and more at any time and restore settings when restarting.
• Add a password to this no-root firewall app.
• Offer custom scripts for advanced users.

Κορυφή 4: Mobiwol

Βασικά χαρακτηριστικά:

• Automatic work on Android once your device starts up.
• Detect apps currently on your mobile phone and set internet permissions for each.
• Permit Wi-Fi network or mobile internet for apps separately.
• Look at the data usage of your apps including current status and history.
• Get notifications when an app tries to access the internet.
• Disable background activities and internet usage of specific apps.

Κορυφή 5: NetGuard

Βασικά χαρακτηριστικά:

• Optionally allow or block apps to access the internet connection.
• When an app starts using the internet, you will get a notification.
• Record network usage for each app and address.
• Customize the theme as you wish.
• Permit or block certain IPs and websites to protect your privacy.
• Support IPv4/IPv6 and TCP/UDP.

Top 6: LostNet NoRoot Firewall

Βασικά χαρακτηριστικά:

• Show you the internet access information about apps on your Android device.
• Display current or recent information about running tasks visually.
• Block or unblock internet access for any apps.
• Restrict apps from using the internet while in background mode.
• Monitor traffic data consumption on tablets and smartphones.
• Start automatically after startup.

Top 7: CIA Firewall – Internet Security Noroot Firewall

Βασικά χαρακτηριστικά:

• Easily control the access to internet for each app separately.
• Set up a mobile internet and Wi-Fi network for any apps.
• Visualize data consumption by hour, data or month.
• Analyze what websites are accessed by apps and display them in a chart.
• Equip domain filter, IP filter, domain resolution and more.
• Customize the interface with built-in themes and colors.

Bonus Tip: Recommended Tool for Android Data Backup & Restore

While no root firewall apps can help you control the internet access of each app and protect your privacy, it is equally important to manage your data security. Many people have reported that they have lost their Android data for various reasons. Therefore, to ensure your device and data safety, backing up device data using a reliable backup and recovery tool is essential.

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