How to completely block Wi-Fi on a Samsung phone: all the methods

Do you want to temporarily or permanently disable Wi-Fi on your Samsung Galaxy, but don't know how to do it correctly? Perhaps you need to save battery life, protect your device from unauthorized connections to untrusted networks, or simply restrict internet access for certain apps. In this article, we'll cover All possible ways to block Wi-Fi on smartphones Samsung with shell One UI (versions 5.0–6.1), including hidden features and third-party tools.

It's important to understand that "blocking" and "disabling" Wi-Fi aren't always the same thing. Disabling a network in the notification panel simply disconnects the current connection, while blocking can mean preventing automatic connections, hiding the network from the device, or even completely disabling the module. We'll cover options for different scenarios, from basic disabling to completely restricting access to wireless networks.

The instructions in the article are relevant for most modern models. Samsung, such as Galaxy S23/S22/S21, Galaxy A54/A34/A14, Galaxy Z Fold/Flip 5 and others working on Android 12–14If your device is older (e.g. Galaxy S10 or Note 10), some menu items may differ slightly, but the general logic will remain the same.

1. Basic Wi-Fi Disabling via the Notification Panel

The easiest and fastest way to disconnect from the network is to use the notification panel. This method does not block the Wi-Fi module completely, but only disconnects the current connection. The network will remain visible to the device, and the next time you turn it on, the phone will automatically connect to the saved networks.

How to do it:

• 📱 Swipe down from the top edge of the screen to open the notification panel.
• 🔍 Find the icon Wi-Fi (usually it is located in the top row of quick settings).
• 🔘 Tap it once - the icon will go out and the connection will be broken.
• 🔄 To turn it back on, click the icon again.

This method is convenient for temporary shutdown, but it has two disadvantages:

1. Your phone will automatically connect to saved networks the next time you turn on Wi-Fi.
2. Some applications (eg. Google Play Services) can turn on Wi-Fi on their own to perform background tasks.

2. Completely disable Wi-Fi in your phone settings

If you need completely deactivate the Wi-Fi moduleTo prevent your phone from not only disconnecting but also from searching for networks, do the following:

Open the app Settings (gear icon on the home screen or in the application menu) and go to the section:

Settings → Connections → Wi-Fi

At the top of the screen you will see a switch Wi-Fi. Move it into position Off. After that:

• 🔌 The Wi-Fi module will be completely disabled.
• 📡 The phone will stop scanning for available networks.
• 🔄 Automatic connection to saved networks will be blocked.

This method is suitable if you want to save battery life or avoid connecting to open networks in public places. However, some system processes (such as updating the network clock) may temporarily turn on Wi-Fi even in this mode.

What to do if Wi-Fi turns on by itself?

If your phone activates Wi-Fi on its own, check the settings in Settings → Connections → Wi-Fi → Advanced → Smart connectionDisable the "Automatically connect to open networks" option.

3. Block a specific Wi-Fi network (forget the network)

If you are concerned about connecting to a certain network (for example, a neighbor's, office, or public one), you can "forget" it. After this, your phone will not connect to it automatically, even if Wi-Fi is turned on.

Instructions:

1. Open Settings → Connections → Wi-Fi.
2. Tap the name of the network you want to block.
3. Click the button Delete (or Forget in some versions One UI).
4. Confirm the action.

Now your phone won't connect to this network automatically. If the network is open (without a password), the device may prompt you to connect again the next time you scan, but this will only happen after your confirmation.

Please note: if the network is hidden (doesn't broadcast its name), your phone may still "see" it and offer to connect if you previously entered its name manually. In this case, you'll need to use other blocking methods.

4. Use Airplane Mode to completely lock

Airplane Mode (Airplane mode) turns off all wireless modules on your phone, including Wi-Fi, mobile network, Bluetooth, and GPS. This is the most reliable way to completely block Wi-Fi, but it also disables other communication features.

How to activate:

• 📱 Swipe down the notification panel.
• 🛫 Find the icon Airplane mode (airplane) and tap on it.
• 🔘 Alternatively: Settings → Connections → Airplane Mode.

After switching on:

If you only need to keep Wi-Fi enabled, activate Airplane Mode and then manually turn on Wi-Fi from the notification panel. This will allow you to use only wireless networking, blocking mobile data and Bluetooth.

5. Block Wi-Fi for individual apps

If your goal is to restrict internet access for specific applications (for example, games or social networks), but leave Wi-Fi on for others, use the built-in function Data savings or third-party firewalls.

Method 1: Via Samsung Settings

1. Open Settings → Connections → Data Usage.
2. Select Mobile data or Wi-Fi (depending on the connection type).
3. Tap the app you want to block access for.
4. Activate the option Disable background data usage.

Method 2: Using the NetGuard app (without root)

Application NetGuard (available in Google Play) allows you to block Wi-Fi and mobile data access for individual apps without root access. After installation:

• 📋 Open NetGuard and provide access to VPN (this is necessary for traffic filtering).
• 🔍 Find the application in the list.
• 🚫 Tap the Wi-Fi icon next to it to block access.

This method is useful if you want, for example, to prevent your child from using YouTube over Wi-Fi, but still allow them access to educational apps.

6. Hardware Wi-Fi blocking (for advanced users)

If you need completely disable the Wi-Fi module at the physical level, this can only be done with the help of root rights or through the engineering menu. Both methods require caution and may void the warranty or cause unstable operation of the device.

Method 1: via the engineering menu (without root)

Some models Samsung Allows you to disable hardware modules through a hidden engineering menu. To do this:

1. Open the app Telephone.
2. Enter the combination: #0011# or #9090#.
3. In the menu that opens, find the section Wi-Fi or RF Band Selection.
4. Select an option Turn Off for Wi-Fi.

⚠️ Note: Not all models Samsung support this method. Incorrect operations in the engineering menu may result in network failure or complete loss of connection. Use at your own risk.

Method 2: Using root and a file manager

If you have root access, you can disable Wi-Fi by renaming the system files responsible for the module's operation. To do this:

1. Install a file manager with root support (e.g. Root Explorer).
2. Go to the folder /system/etc/firmware.
3. Find files with names containing wlan or wi-fi (For example, wlan_pronto_wlan.mbn).
4. Rename them by adding the extension .bak.
5. Restart your device.

⚠️ Warning: This method may prevent you from re-enabling Wi-Fi without restoring the original files. It may also interfere with other wireless features (Bluetooth, NFC).

Hardware blocking is only useful in extreme cases, such as if you want to completely prevent a company device or a child's phone from connecting to Wi-Fi.

7. Alternative methods: time limits and parental controls

If your goal is not just to block Wi-Fi, but control its use (for example, to limit access time for a child), use the built-in functions Samsung or third-party applications.

Method 1: Digital Wellbeing

Function Digital Wellbeing Allows you to set limits on app usage and block them after a certain time. To set it up:

1. Open Settings → Digital Wellbeing & Parental Controls.
2. Select Control Panel.
3. Click on App usage timer.
4. Set a limit for browsers or other applications using Wi-Fi.

Method 2: Parental control apps

Apps like Google Family Link, Kaspersky Safe Kids or Norton Family allow:

• 🕒 Set a Wi-Fi access schedule.
• 🚫 Block specific websites or apps.
• 📊 Track internet usage history.

These methods do not block Wi-Fi completely, but they allow you to flexibly manage its use, which is especially useful for families with children.

FAQ: Frequently asked questions about Wi-Fi blocking on Samsung devices

Is it possible to block Wi-Fi on a Samsung device without disabling mobile data?

Yes, to do this, manually disable Wi-Fi through the notification panel or settings, but leave mobile data enabled. You can also use airplane mode and then manually enable mobile data only.

Why does Wi-Fi turn on by itself on my Samsung?

This is due to the functions Intelligent connection or Automatic connection to open networks. Turn them off in Settings → Connections → Wi-Fi → Advanced.

How to block Wi-Fi for all apps except one?

Use a firewall, for example, NetGuardIn its settings, block Wi-Fi for all applications except the selected one. Alternatively, you can enable the mode Data savings and manually allow access only to the required application.

Will turning off Wi-Fi save battery life?

Yes, but the effect depends on the phone model. Samsung Galaxy With One UI Turning off Wi-Fi can extend battery life by 5-15%, especially if you're in an area with a weak signal (constantly scanning for networks drains your battery).

Is it possible to block Wi-Fi on a Samsung device using SMS or USSD commands?

No, Samsung does not support Wi-Fi control via SMS or USSD codes. The only way to remotely control is using apps like Find My Mobile (requires Samsung account registration).

Now you know all the possible ways to block Wi-Fi on phones. Samsung — from a simple shutdown to a complete hardware lock. Choose a method depending on your goal: saving battery life, protecting against unauthorized access, or controlling internet usage. If you need a temporary solution, simply disable Wi-Fi in the notification panel. For a permanent lock, airplane mode or "forget" network mode are suitable. In extreme cases, you can resort to the engineering menu or root methods, but be aware of the risks.