Wi-Fi won't turn on on my Samsung Galaxy: Causes and how to fix it yourself

In this article we will look at all possible reasonsWhy doesn't Wi-Fi turn on? Samsung Galaxy, — from a trivial bug after an update to physical wear and tear of components. You'll learn how diagnose the problem without contacting a service center, which settings to check first, and when repairs are truly needed. For your convenience, we've compiled a table of symptoms and solutions and added interactive checklists.

If your phone can't detect networks, constantly loses connection, or the Wi-Fi button in the notification bar is stuck in the "Off" position, start with simple steps: rebooting and resetting network settings. In most cases, this is sufficient. But if the problem persists, read on: we'll cover even rarer cases in detail, such as VPN conflicts or MAC address blocking by the router.

1. Software glitches: from bugs to broken updates

The most common reason why Wi-Fi doesn't turn on Samsung Galaxy, — software errorsThey arise after:

• 📱 Android updates (especially on One UI 5.0/6.0 — there are known bugs with Wi-Fi drivers).
• 🔄 Incorrect firmware rollback or installing custom software.
• 🛠️ Clearing the cache through Recovery Mode (Sometimes critical configuration files are deleted).
• 🔋 Abrupt power outage while the module is operating (for example, when the battery is discharged to 0%).

The first step is reboot your phone in safe modeThis will help eliminate the influence of third-party applications (such as VPNs or antiviruses, which may block network connections). To do this:

1. Press and hold the power button until the power off menu appears.
2. Press and hold the option Turn off (or Turn off the power).
3. Confirm the transition to Safe mode (a corresponding message will appear on the screen).

If Wi-Fi works in safe mode, the problem is with one of the installed applications. Remove recently added programs (especially those that requested network access) or perform a factory reset via Settings → Device Maintenance → Reset.

2. Resetting network settings: when and how to do it

If Wi-Fi does not turn on after updating or changing the router, reset network settings This often solves the problem. This procedure deletes all saved networks, passwords, VPN and proxy settings, but does not affect personal data (photos, contacts).

Instructions for Samsung Galaxy (relevant for One UI 4.0–6.0):

1. Open Settings → General settings → Reset.
2. Select Reset network settings (or Reset Wi-Fi, mobile network, and Bluetooth).
3. Confirm the action and restart your phone.

After reset:

• 🔄 Reconnect to the network (enter password manually).
• 📶 Check if the box is ticked in the router settings to restrict access by MAC address.
• 🔒 Disable VPN (if you use it) - some services block local connections.

Restart your phone|

Connect to Wi-Fi manually|

Check router settings (DHCP, MAC filter)|

Disable VPN/Proxy|

Update firmware (if available)

-->

Attention! If after the reset Wi-Fi still does not turn on and the network list displays the message "Error" or "Saved, WPA/WPA2 protection", the problem may be in encryption incompatibilitiesTry changing the security type on your router. WPA3 on WPA2-PSK.

3. Hardware malfunctions: how to recognize them and what to do

If software methods do not help, the reason may lie in physical damageTypical symptoms of hardware problems:

• 🚫 Wi-Fi button in the notification panel gray in color and not pressable.
• 🔍 Phone doesn't see any network, even after reset.
• 🔥 Module gets very hot when trying to turn it on.
• 💥 The problem has appeared after a fall or exposure to moisture.

The most vulnerable components:

For self-diagnosis:

1. Enter the code in the dialer #0# → Check your reaction to the test Wi-Fi.
2. Try turning it on Wi-Fi Direct (in the wireless network settings). If this doesn't work, the module is faulty.
3. Inspect the phone for battery swelling (Lift the back cover if possible).

Attention! If the phone fell into the water or was exposed to strong vibration (for example, in a car without a shock absorber), do not try to disassemble it yourselfCorrosion on the circuit board can cause a short circuit. Contact a service center with ultrasonic cleaning equipment.

4. Router conflicts: settings that interfere with the connection

Sometimes the problem is not with the phone, but with incorrect router settings. For example:

• 🔒 MAC filtering: yours Samsung Galaxy may be blacklisted.
• 📡 Hidden network (SSID): the phone does not see it if it has not been connected before.
• 🔄 Incompatible Wi-Fi channel: some Galaxy do not work on channels above 13 (in Russia they are allowed up to 13, in the USA – up to 11).
• 🛡️ IP blocking: The router may limit the number of connected devices.

How to check:

1. Connect another device (laptop, tablet) to the router. If it also can't see the network, the problem is with the router.
2. Go to your router's control panel (usually at 192.168.0.1 or 192.168.1.1).
3. Check:
   • Is it included? DHCP (must be in mode Server).
   • Is your MAC address blacklisted? (Wireless → MAC Filter).
   • What safety standard is used (WPA2-PSK — the best option).

Attention! If the router issues an IP address from the range 169.254.x.x, this means that DHCP is not working. Set it up manually or reset the router to factory settings (button Reset on the back panel).

5. Updating firmware and kernel: when it helps

Manufacturers regularly release patches to fix Wi-Fi bugs. If your Samsung Galaxy hasn't been updated for more than 3-6 months, outdated software may be the cause of the problem. This is especially true for the following models:

• 📱 Galaxy S20/S21 on One UI 3.1 (driver bug) Broadcom 4359).
• 📱 Galaxy A52/A72 after upgrading to Android 13.
• 📱 Galaxy Note 10/20 with a core 4.14.113 (conflict with module Qualcomm WCN3990).

How to update firmware:

1. Go to Settings → Software Update.
2. Click Download and install.
3. If the update is not found, check manually via Samsung Smart Switch (PC version).

If the update doesn't help or there is no update, you can try Reflash the phone manually through Odin (for advanced users only!). On Galaxy S22 and newer it may lead to blocking KNOX and loss of warranty.

6. Alternative methods: from launchers to service codes

If standard methods don't work, try non-obvious solutions:

1. Change launcher

On some firmware (for example, One UI 4.1 For Galaxy S10) the Wi-Fi bug is related to the shell Samsung Experience. Install an alternative launcher (for example, Nova Launcher) and check if you can now turn on Wi-Fi via the widget.

2. Service codes

Enter in the dialer:

• ##4636## → Wi-Fi information → Wi-Fi status (check if the module is active).
• *#9900# → SysDump → Wi-Fi (will create a log for diagnostics).

3. Roll back to factory firmware

If the problem appears after an update, you can return to the old version of the software via Samsung Smart Switch (chapter Recovery). Attention! This will delete all data from your phone.

7. When to contact a service center: signs of serious breakdowns

If you have tried all the methods but the Wi-Fi is still on Samsung Galaxy It still doesn't turn on, most likely it's because hardware failureContact the service center if:

• 🔧 Phone fell from a height or was subjected to strong blows.
• 💧 On him liquid got in (even if everything looks dry on the outside).
• 🔥 Wi-Fi module gets very hot when trying to turn it on.
• 📵 Phone doesn't see any network, including mobile (the antenna unit may break down).

Cost of repairs in official service centers Samsung (approximate prices for Moscow, 2026):

Attention! Before visiting the service:

1. Back up your data (even if your phone doesn't connect to Wi-Fi, use a USB cable).
2. Check if the warranty is valid after repair (at official centers) Samsung - yes, in unofficial ones - no).
3. If your phone is under warranty, do not disassemble it yourself - this will void the warranty.

FAQ: Frequently asked questions about Wi-Fi on Samsung Galaxy