Why Android does not see Wi-Fi networks: a complete analysis of reasons and solutions

Are you trying to connect to Wi-Fi, but your Androidsmartphone stubbornly does not see any network? Or are only some access points displayed, and the one you need has disappeared? The problem occurs on devices of all brands: from budget Redmi and Samsung Galaxy A to flagships Google Pixel and OnePlus. In 80% of cases, you can fix it yourself - without contacting a service center.

In this article we will look all possible reasonson which Android stopped seeing Wi-Fi from trivial errors in settings to hardware faults. You will learn how to diagnose the problem, which parameters to check first, and what to do if your smartphone does not detect networks even after a reset. Let us separately focus on hidden settings of Android 13/14which are often overlooked.

Important: if the problem occurred after the update firmware or phone crash, the algorithm of actions will be different. We will describe both scenarios in detail.

1. Checking basic settings: what could go wrong

Before sinning on hardware or firmware, make sure that the problem does not lie in basic things. Most often, users overlook:

• 📶 Airplane mode —even if the icon on the notification panel is not lit, it could be activated accidentally through Fast settings or a physical button (on some models Sony Xperia and ASUS ROG Phone).
• 🔄 Automatic switching to mobile data —Android 12+ has a function Adaptive communicationthat can block Wi-Fi searches when the signal is weak.
• 🔒 Background activity restrictions —if you have previously optimized battery consumption for system applications, the Wi-Fi module may have been disabled.

How to check:

1. Open Settings → Network and Internet → Wi-Fi.
2. Make sure the slider Wi-Fi is active (blue/green).
3. Tap on ⋮ → Advanced → Adaptive connection and disable this option.
4. Go to Settings → Applications → ⋮ → Special access → Battery optimization and find Wi-Fi in the list. Make sure that there is no restriction set for it.

If after these manipulations the networks are still not displayed, go to the next section. If you see a list of networks, but cannot connect to a specific one, the problem lies in the router settings (more on this below).

2. Software failures: how to restore the visibility of networks without resetting

Operating system Android known for its "glitches" with network modules. Most often they appear after:

• 📱 Firmware updates (especially on Samsung s One UI 5.0+ i Xiaomi s HyperOS).
• 🔄 Installing VPN or applications to change the MAC address (for example MacDroid or WiFi Mac Changer).
• 🛠️ Manually editing the file wpa_supplicant.conf (relevant for rooted devices).

Here's what you can do without a full reset:

Reset network settings

This will delete all saved Wi-Fi passwords, but will return the module to communication functionality:

1. Go to Settings → System → Reset → Reset Wi-Fi, mobile network and Bluetooth.
2. Confirm the action. The phone will reboot.

Clearing the system application cache

Sometimes clearing the cache for:

• Settings (com.android.settings)
• Wi-Fi (com.android.wifi)
• Google Play Services (com.google.android.gms)

How to do it:

1. Open Settings → Applications → Show all applications.
2. Find the application you need, tap on it → Storage → Clear cache.

If these methods did not work, try roll back the firmware update (if the problem appeared after this) or execute reset to factory settingsFor information on how to do this safely, see the following. section.

3. Hardware faults: when the hardware is to blame

If software methods did not help, there is a high probability hardware damage. Here are the key signs:

Symptom	Probable cause	Solution
Phone does not see none network Wi-Fi, but Bluetooth works	The Wi-Fi module or antenna is damaged	Replacement of the module in the service (~1500–4000 ₽)
Wi-Fi appears only next to the router (1–2 meters)	The antenna is disconnected or the contacts are oxidized	Disassembling and soldering/cleaning contacts
The phone sees networks, but does not connect (writes "Saved")	Problem with the MAC address or damage chip	Checking the MAC, replacing the module if necessary
Wi-Fi works only in 2.4 GHz mode	The 5 GHz transceiver in the module is damaged	Replacing the module or disabling 5 GHz in the settings router

How to check the hardware serviceability:

1. Test in the engineering menu:

   ##4636##

   Go to Wi-Fi information and look at the status Wi-Fi status. If there Disabled or error, the module is faulty.

2. Checking on another device: bring your working smartphone to the router. If it sees the network, but yours does not, the problem is in the phone.
3. Antenna diagnostics: clasp the phone with your hand in the area of ​​the top cover (where the antenna is usually located). If the signal disappears, the antenna contact is broken.

What to do if the phone fell into water?

If the device came into contact with liquid, do not turn it on do not connect it to the charger! An oxide film on the contacts of the Wi-Fi module can cause a short circuit. Required:

1. Disassemble the phone (or take it to a service station).

2. Clean the board with ultrasound or isopropyl alcohol (99%).

3. Check the integrity of the tracks with a multimeter.

In 60% of cases, after proper cleaning, the Wi-Fi module restores functionality.

If you suspect a hardware malfunction, but are not sure, try connecting external Wi-Fi adapter via OTG (works on most devices with Android 10+). If networks appear with the adapter, the problem is definitely in the phone module.

4. Problems with the router: why the network is not visible only on Android

Sometimes the problem lies not in the smartphone, but in the router settings. Especially if:

• 📱 Other devices (laptops, tablets) see the network normally.
• 🔄 Wi-Fi disappears only on Android, but works on iPhone .
• 🛡️ The network appears, but when connected it says “Authentication...” and falls off.

Here are the router settings that can block Android:

Router parameter	Problem for Android	How to fix
Hiding SSID (Hide SSID)	Android does not find hidden networks well, especially on older versions	Disable hiding or enter the SSID manually on your phone
Filtering by MAC address	If the phone's MAC is not in the white list, the network will not be displayed	Add the phone's MAC to the router settings or disable filtering
802.11r mode (Fast Roaming)	Many Android devices do not support this standard	Disable 802.11r in the Wi-Fi router settings
WPA3 encryption	Devices running Android 9 and below may not see such networks	Switch to WPA2 or update the phone firmware

How to check the router settings:

1. Connect to the router through another device (laptop, another phone).
2. Open the router control panel (usually by address 192.168.0.1 or 192.168.1.1).
3. Go to section Wi-Fi or Wireless network.
4. Check the parameters from the table above.

If after changing the router settings the network is still not visible, try change Wi-Fi channel manually (for example, from automatic to 6th or 11th for 2.4 GHz. Sometimes interference from neighboring networks interferes with detection.

5. Conflicts with the firmware and kernel of the system

On devices with custom firmware (for example LineageOS, Pixel Experience) or root access, the problem often lies in:

• 🐛 Incompatibility of the kernel with the Wi-Fi driver.
• 🔧 Incorrectly specified parameters in build.prop.
• 📦 Lack of proprietary libraries (vendor blobs) for the Wi-Fi module.

How to diagnose:

1. Check the system log for Wi-Fi errors:

   adb logcat | grep -i"wifi\|supplicant"

   Look for lines with E/WifiStateMachine or failed to load driver.

2. Make sure that in build.prop The correct parameters for your device are registered:

   ro.wifi.channels=
   wifi.supplicant_scan_interval=15

3. Check for the presence of driver files in /vendor/firmware (for example, wlan.mdt for Qualcomm-chips).

Solutions:

• 🔄 Reflash the device to official firmware (if you used custom).
• 📥 Install the correct vendor blobs for your model (look at XDA Developers or 4PDA).
• 🛠️ Roll back to an older version of the kernel if the problem appeared after updating it.

For devices on Mediatek (for example, Realme, Oppo, Tecno), an additional problem may lie in file absence WMT.cfg in the /datasection. It can be copied from the official firmware or from another working device of the same model.

6 Problems with the MAC address: why. the phone “does not see” the router

In the latest versions Android (starting from 10) it is used randomization of the MAC address to protect privacy. This can lead to:

• 🚫 Blocking the device by MAC filtering on the router.
• 🔄 Constant authentication requests.
• 📵 Complete disappearance of the network from the list (if the router remembers the "old" MAC).

How to check and fix:

1. Open Settings → Network and Internet → Wi-Fi → ⚙️ (network settings) → Advanced.
2. Find item MAC address or MAC type. If there is Random, switch to Original.
3. Reboot your phone and router.

If the network still does not appear:

• Check if your MAC is blocked in the router settings (section Wireless MAC Filter).
• Remove the network from those saved on the phone and connect again.
• If you use Android 12+, try disabling the function Privacy → MAC Randomization in the developer (Settings → System → For developers).

How to find the original MAC address of the phone?

The original MAC is registered in several places:

1. On the device box (if not erased).

2. In Settings → About phone → General information → Wi-Fi MAC address (sometimes hidden).

3. Through the engineering menu: ##232338## (for Mediatek) or ##4636## → Wi-Fi information.

4. removable battery).

If the MAC starts with 02:, 06: or 0A: is a random address, the original one must be found in other ways.

On some firmware (for example, MIUI from Xiaomi) the random MAC can be reset every time you connect, which causes conflicts with routers TP-Link i ASUS. In this case, only disabling randomization or flashing an alternative kernel will help.

7. When nothing helps: extreme measures.

If you have tried all the methods, but Android still does not see Wi-Fithere are radical solutions:

• 🔧 Flashing via Fastboot - relevant if the problem appeared after an OTA update. You need official firmware for your model (download from the manufacturer’s website. or XDA).
• 📱 Replacement of the Wi-Fi module —if the diagnostics showed a hardware malfunction. Cost of the module for popular models:
  • Samsung Galaxy S22: ~2500 ₽
  • Xiaomi Redmi Note 11: ~1200 ₽
  • Google Pixel 6: ~3500 ₽
• 🛠️ Soldering antenna contacts —if the problem is broken tracks. Requires disassembling the phone and soldering station.

Warnings before radical measures:

⚠️ Attention! Flashing via Fastboot or ODIN will reset all data to phone, including internal memory. If your Wi-Fi does not work, but USB debugging is enabled, first make a backup via adb backup or Titanium Backup (root is required).

⚠️ Attention! On devices with Exynosprocessors (for example Samsung Galaxy S21 for the European market) replacing a Wi-Fi module may require firmware CP (modem part) via Odin. Without this, the module will not work!

If you decide to replace the module yourself:

1. Buy the module exactly for your model (even modules from the same manufacturer may differ, for example, Redmi Note 10 and Redmi Note 10 Pro).
2. Use anti-static wrist strap tweezers - static electricity can damage the chip.
3. After replacement, check that the antenna contacts are tight adjacent to the module.

FAQ: Frequently asked questions about problems with Wi-Fi on Android

My phone sees networks, but does not connect - it says “Saved”. What should I do?

This is an authentication problem:

1. Remove the network from. saved and connect again.
2. Change the security type on the router from WPA3 to WPA2.
3. Disable MAC address randomization on the phone.
4. Check if the checkbox is unchecked Advanced → Auto-connect (sometimes it interferes).

If that doesn’t help, reset the network settings on your phone.

After updating to Android 14, Wi-Fi stopped working. How to roll back?

A rollback is possible, but requires unlocking the bootloader and losing data. Instructions:

1. Download the official firmware of the previous version from the manufacturer's website.
2. Unlock the bootloader (for Xiaomi you need to obtain permission through Mi Unlock).
3. Flash through Fastboot:

   fastboot flash system system.img
   fastboot flash boot boot.img
   fastboot reboot

For Samsung use Odin with the flag BL, AP, CP, CSC (not Home CSC!).

The phone only sees 2.4 GHz, but not 5 GHz. What's the matter?

Possible reasons:

• Your phone does not support 5 GHz (relevant for budget models, for example Redmi 9A).
• The country has restrictions on 5 GHz frequencies (check in Settings → Wi-Fi → Advanced → Country).
• The 5 GHz transceiver in the Wi-Fi module is damaged.
• On the router the mode is enabled 802.11ac only for 5 GHz, but the phone does not support it.

Solution: try manually specifying the country in the Wi-Fi settings (for example, USA), if you have an unlocked phone.

Is it possible to connect to Wi-Fi without a working module (via USB or Bluetooth)?

Yes, but with limitations:

• Via USB (Reverse Tethering): you need root or ADB, as well as a PC with enabled Shared Internet access.
• Via Bluetooth: you can create PAN network (Personal Area Network) with a laptop, but the speed will be low (~1 Mbit/s).
• Through an OTG adapter: connect an external Wi-Fi adapter (does not work on all phones).

For Samsung DeX or Huawei Desktop Mode you can use an Ethernet adapter via USB-C.

How to check if the Wi-Fi module is working if the phone does not turn on?

If the phone does not respond to the power button, but is charging:

1. Connect it to the PC and check if it is detected as Qualcomm 9008 or Mediatek Preloader (which means there is a chance to resuscitate via EDL or SP Flash Tool).
2. If the phone vibrates when charging is connected, but does not turn on, there may be a problem in the display, but Wi-Fi is working.
3. To check the module, you need diagnostics via UART (a special cable) or a multimeter (to test the power supply on the chip).

Without special equipment, you need to accurately determine the functionality of the module is impossible.