How to completely clear Wi-Fi on a Samsung phone: delete networks, cache, and reset settings

Have you noticed that yours? Samsung Galaxy Is your Wi-Fi connection slow, constantly dropping, or showing authentication errors? The cause could be accumulated wireless network data, conflicting settings, or an outdated cache. Clearing your phone's Wi-Fi isn't just about deleting saved passwords; it's a comprehensive set of steps that will restore connection stability and speed up your internet.

In this article we will look at 5 proven methods Wi-Fi cleaning on Samsung — from basic network deletion to a thorough network reset. These instructions apply to all modern models: Galaxy S24/S23/S22, A55/A54/A34, Z Flip/Fold 5 and others with a shell One UI 5.0/6.0You'll also learn how to avoid common mistakes that lead to even bigger connection problems.

Before you begin, make sure your issue is definitely Wi-Fi-related, not your ISP or router-related. To do this, try connecting to a different network (such as a mobile hotspot) or rebooting your router. If the issue persists, read on.

1. Manually deleting saved Wi-Fi networks

The easiest way to clear your Wi-Fi is to delete unnecessary networks from your phone's memory. Over time, dozens of them accumulate: home networks, work networks, cafe networks, hotel networks, and even randomly connected open hotspots. All of these networks can conflict with each other, slowing down your connection.

How to do it:

• 📱 Open Settings → Connections → Wi-Fi.
• 🔍 Click on the three dots in the upper right corner and select Additionally (or Network management in new versions One UI).
• 🗑️ In the list of saved networks, tap on the desired one and select Delete (or Forget).
• 🔄 Repeat for all unnecessary networks. Pay special attention to networks with an exclamation mark—they may be problematic.

Important: After deleting a network, your phone won't connect to it automatically. You'll need to re-enter the password the next time you connect. If you've deleted your home network, be sure to write down the password in advance!

2. Reset Wi-Fi, mobile data, and Bluetooth settings

If manual cleaning does not help, the next step is reset network settingsThis function will reset all wireless connections to factory settings, including Wi-Fi, mobile data, and BluetoothHowever, personal data (photos, contacts, applications) is not affected.

Instructions:

1. Go to Settings → General management → Reset.
2. Select Reset network settings (or Reset network settings).
3. Confirm the action by entering the PIN code or pattern.
4. Wait for your phone to reboot (it will take 1–2 minutes).

After reset:

• 🔄 All saved Wi-Fi networks will be deleted.
• 📱 Settings Bluetooth and mobile Internet (APN) will be reset to standard.
• 🔒 Network passwords will have to be re-entered.

Check your mobile internet connection (you may need to set up an APN)

Reconnect to your home Wi-Fi

Update your router firmware if problems persist.

Reboot your router

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⚠️ Attention: If you use VPN or special settings APN for mobile Internet (for example, from an operator) Tele2 or Yota), they will have to be configured again. Save screenshots of the settings in advance or check with your provider.

3. Clearing the cache and data of the Wi-Fi app

On Samsung a system application is responsible for Wi-Fi operation com.android.wifiIts cache and data can become clogged, especially if you frequently connect to different networks. Clearing it will help eliminate errors like "Authentication..." or Obtaining an IP address.

How to clean:

1. Open Settings → Applications.
2. Click on the three dots → Show system apps.
3. Find the app Wi-Fi (or WifiService in older versions).
4. Select Memory → Clear cache And Clear data.

What will this give:

• 🚀 Speeds up the process of connecting to networks.
• 🔧 Fixes authentication errors.
• 📡 Eliminates freezes when searching for networks.

⚠️ Attention: After clearing app data Wi-Fi Your phone may temporarily be unable to detect networks. Restart your device if the issue persists after 1-2 minutes.

Once a month

Only when problems arise

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4. Updating firmware and Wi-Fi drivers

If your Samsung works on an outdated version One UIWi-Fi issues may be related to bugs in the system software. The manufacturer regularly releases patches to fix connection issues, so updating the firmware is a must.

How to update:

• 📱 Go to Settings → Software update → Download and install.
• 🔄 If an update is available, confirm the installation and wait for the reboot.
• 🔍 After the update, check the Wi-Fi connection Settings → Diagnostics → Wi-Fi.

On models Galaxy S22 and newer after updating to One UI 6.1 An automatic Wi-Fi optimization feature has been added. It analyzes connection quality and switches between 2.4 GHz and 5 GHz without interrupting the connection.

What should I do if my Wi-Fi stops working completely after an update?

If after updating the firmware, Wi-Fi is completely disabled (does not turn on or does not find networks), follow these steps:

1. Reboot your phone to safe mode (press and hold the power button → "Safe mode").

2. Test Wi-Fi in Safe Mode. If it works, the problem is with a third-party app (uninstall any recently installed apps).

3. If it doesn’t help, do the following: factory reset (see section 5).

4. In extreme cases, contact a service center - there may be a failure of the Wi-Fi controller (especially on Galaxy S21 Ultra And Note 20).

5. Full reset of the phone to factory settings

If none of the previous methods helped, the next step is extreme measure — reset your phone to factory settings. This will delete all data, including apps, photos, and accounts, so only use this method for serious problems.

How to reset:

1. Back up your important data via Settings → Accounts and archiving → Archiving and recovery.
2. Go to Settings → General management → Reset → Reset data.
3. Confirm the action and wait for it to complete (it will take 5-10 minutes).

What will happen after the reset:

• 📱 Your phone will be like new - without apps and personal data.
• 🔧 All network settings, including Wi-Fi, will be reset.
• 🔒 You will need to log in to your account again Samsung And Google.

⚠️ Attention: On models Galaxy S20 and older may require reactivation after reset eSIM (if you use one). Check the procedure with your operator in advance.

6. Additional tips for stable Wi-Fi

Even after clearing your Wi-Fi, problems may return if the root cause is not addressed. 5 tips, which will help avoid repeated failures:

• 🔄 Reboot your router regularly. Do this once every 1-2 weeks, especially if you have a budget model (TP-Link TL-WR840N, D-Link DIR-300).
• 📶 Disable automatic connection to weak networks. IN Wi-Fi settings → Additionally → Smart Switch (disable this option).
• 🛡️ Update your router firmware. Outdated router software often conflicts with new phones. Samsung.
• 📱 Use a static IP for your phone. This will help avoid DHCP conflicts. Setting in Wi-Fi settings → select network → Additionally → IP settings → Static.
• 🔋 Turn off battery saving for Wi-Fi. IN Settings → Device maintenance → Battery → Optimizing application performance → find Wi-Fi and disable optimization.

If you often connect to public networks (in cafes, airports), install the app WiFi Analyzer or NetSpotIt will help you choose the least loaded channel and avoid overload.

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

Is it possible to clear Wi-Fi without losing saved passwords?

No, deleting a network or resetting the settings will erase the passwords. To avoid losing them, export them first using apps like WiFi Password Viewer (root required) or write manually.

Why doesn't my phone find networks after clearing Wi-Fi?

Possible reasons:

1. Wi-Fi module failure (restart your phone).
2. The adapter is disabled in the settings (check in Settings → Connections → Wi-Fi).
3. There is a problem with the router (try connecting from another device).

If networks do not appear even after a reboot, reset network settings (section 2).

How to clear Wi-Fi on a rooted Samsung device?

With root access, you can manually delete system Wi-Fi cache files:

1. Install Root Explorer or FX File Explorer.
2. Go to /data/misc/wifi/.
3. Delete the files WifiConfigStore.xml And WifiConfigStoreBackup.xml.
4. Restart your phone.

⚠️ Be careful: Incorrectly deleting files can cause your system to crash.

Will clearing Wi-Fi help if the internet is slow?

Not always. If the speed is low. in all networks, the problem may be in:

• Provider's tariff (check through Speedtest).
• Reboot the router (restart it).
• Restrictions on the website/service side (for example, torrents).

Clearing your Wi-Fi will only help if your connection is slow. to a specific network (for example, it works quickly at home, but not at work).

Do I need to clear Wi-Fi on my new Samsung phone?

On a new phone, cleaning is not required, but it is recommended:

• Remove unnecessary networks after the first setup.
• Disable automatic connection to open networks (Wi-Fi settings → Additionally → Auto-connection to open networks).
• Update the firmware to the latest version.

This will prevent future connection problems.