Wireless networks on Android is not only the usual Wi-Fi in the settings, but also a whole arsenal of hidden tools for diagnostics, debugging and alternative connection methods. Many users are limited to basic functions, not even suspecting that their smartphone can scan networks manually, analyze signal strength, or connect to access points via ADB. This article will reveal all the possible places where wireless networks are hidden on Android - from obvious menus to engineering modes accessible only through ##4636##.

We will look at not only the standard methods of connecting to Wi-Fi i Bluetooth, but also little-known tricks: how to find saved networks without access to the settings where connection logs are stored, and how to force the smartphone to show hidden access points. We will pay special attention to problems when Android "does not see" the network - hidden diagnostic tools that even manufacturers are silent about are useful here.

If you have ever encountered the fact that your smartphone refuses to connect to the network, although it definitely exists, or you want to know how to scan the airwaves for the presence of “foreign” access points, this article is for you. We will do without complex technical terms, but at the same time we will reveal all the professional techniques that service center engineers use.

1. Standard settings: where to look for Wi-Fi and Bluetooth

Let's start with the most obvious - the basic menus Androidwhere wireless networks are managed. The path to them may differ slightly depending on the OS version and shell (MIUI, One UI, ColorOS etc.), but the general logic remains the same. The main points you need:

  • 📶 Wi-Fi: Settings → Network and Internet → Wi-Fi. All available networks are displayed here, as well as saved connections (click on the gear next to the network name for additional options).
  • 🔵 Bluetooth: Settings → Connected devices → Connection settings → Bluetooth. Turn on scanning to find nearby devices.
  • 📱 Modem mode: Settings → Network and Internet → Access point and modem. Here you can distribute the Internet from a smartphone or connect to another device as a modem.
  • 🔄 Data transfer: Settings → Network and Internet → SIM cards and mobile network. Management of 4G/5G and roaming.

In modern versions Android 12+ these items can be combined in one section Network and Internet, and in old ones (for example, Android 9) - scattered across different menus. If you do not find the desired section, use Search by settings (magnifying glass icon in the upper right corner).

Important nuance: in some firmware (for example, on Xiaomi or Realme) menu items may be duplicated. For example, Wi-Fi can be found in quick settings (swipe down from the top edge of the screen) and in the main settings menu. At the same time, the functionality in them may differ - in some places advanced parameters are available, and in others only basic ones.

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If there is no "Network and Internet" item in the settings, try the path Settings → Connections (relevant for Samsung i LG).

2. Hidden menus for network diagnostics: engineering codes

When standard settings do not help - for example, the smartphone does not see networks that are definitely nearby - they come to the rescue engineering menusThey are hidden from ordinary users, but contain detailed information about the status of wireless modules. use special USSD codes:

  • 📡 ##4636## —main test menu. Go to the Wi-Fi information tab (or Wi-Fi stats) to see a list of all detected networks, signal strength and connection status.
  • 🔍 ##232338## — module test Wi-Fi. Shows the MAC address of the device and the current connection status.
  • 🔵 ##232331## — test Bluetooth. Allows you to check the functionality of the module and see the list of paired devices.
  • 📶 ##526## — menu Wireless LAN (on some devices). Here you can manually start scanning networks.

In the engineering menu (##4636##), pay attention to the parameter Wi-Fi signal strength. If it shows a value below -70 dBm, the signal is too weak and the smartphone may not connect. data-i="90">(those that do not broadcast their name - hidden networks (those who do not broadcast their name - SSID), if they were previously saved on the device.

Critical information: on some devices (for example, Samsung Galaxy s Exynos-processors) the engineering menu can be blocked by the manufacturer. In this case, try an alternative code #0# or use applications like Network Signal Info.

📊 What engineering code have you used before?
##4636##
#06#
##232338##*
Never used
Other

3. Applications for scanning networks: what is better than standard tools

If the built-in tools Android do not suit you, third-party utilities will come to the rescue. They not only show networks, but also analyze their parameters: channel, encryption, load, and even the approximate location of the router. Here are the top solutions:

Application Functions Features
WiFi Analyzer Network scanning, channel analysis, load graph Free, no advertising, supported Android 5.0+
Network Signal Info Detailed information about Wi-Fi, cellular communications, Bluetooth Shows MACaddresses, signal strength dBm
Fing Scanning devices on the network, checking ports, speed There is a premium version for advanced analysis
NetSpot Building a Wi-Fi coverage map, speed test Requires registration for some functions

For example, WiFi Analyzer will help you select the least loaded channel for your router if the Internet speed drops due to interference. A Network Signal Info will show what standard (802.11n, 802.11ac) your connection works on and whether the router is limiting it.

For Bluetooth suitable Bluetooth Scanner - it scans nearby devices and shows their RSSI (signal level). This is useful if you are trying to connect, for example, headphones, but the smartphone “does not see them.”

How to scan networks without root access?

Most scanning applications (for example, WiFi Analyzer) work without root. However, to view passwords of saved networks or change the MAC address, you will need superuser rights.

4. Where saved networks are stored: access to system files

All ever connected networks are saved in system files Android. If you need to find the password for Wi-Fito which you connected before, or delete a “forgotten” network that is interfering with the connection, refer to the following paths:

  • 📁 File /data/misc/wifi/WifiConfigStore.xml —contains a list of all saved networks and their passwords (required root).
  • 🔧 Settings Settings → Network and Internet → Wi-Fi → Saved networks —here you can delete unnecessary connections without root.
  • 🔄 Command adb shell cmd wifi list-networks — will show a list of networks via ADB (without root, but you need a computer).
  • 📱 Application WiFi Password Viewer — displays passwords of saved networks (works only on rooted devices).

If you don’t have one root access, but you need to reset the network settings, do the following:

  1. Go to Settings → System → Reset settings.
  2. Select Resetting network settings (not to be confused with a full reset!).
  3. Confirm the action. After the reboot, all saved networks and passwords will be deleted.

Warning: editing system files without knowledge can lead to loss of connection or module failure Wi-Fi. If you are not sure, use standard settings or ADB.

☑️ How to safely clear the list of networks

Done: 0 / 4

5. Connection problems: why Android doesn’t see networks

The situation when a smartphone “doesn’t see” networks, although they exist, is one of the most common. The reasons can be either software or hardware. Let's look at the main ones:

  • 🔄 Wi-Fi module is disabled: check whether airplane mode is enabled or whether battery saving is activated (it can disable background processes, including network scanning).
  • 📵 Problems with the router: if the smartphone does not see only one network, try rebooting the router or changing the channel in its settings (via 192.168.1.1 or 192.168.0.1).
  • 🔧 Failure in the firmware: update Android to the latest version or reset the settings network (see previous section).
  • 🛠️ Hardware malfunction: if the smartphone does not see none the network, it may be damaged Wi-Fi module. Check it through the engineering menu (##4636##).

If the problem occurs only with Bluetooth, try:

  1. Remove all paired devices (Settings → Bluetooth → Tap on device → Forget).
  2. Clear application cache Bluetooth (Settings → Applications → Show all → Bluetooth → Storage → Clear cache).
  3. Restart the device in Safe Mode (hold the power button → "Safe Mode") to check if the application is interfering with the operation.

Critical information: on some devices (for example, Xiaomi Redmi Note 10) after updating to Android 13 a bug occurs due to which the smartphone does not connect to encrypted networks WPA3. The solution is to change the encryption type on the router to WPA2.

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If the smartphone does not see the network after updating the OS, first try resetting the network settings rather than doing a full reset.

6. Alternative connection methods: from NFC to Li-Fi

In addition to the usual Wi-Fi i Bluetooth, Android it also supports other wireless technologies. They are less common, but can be useful in specific situations:

  • 📲 NFC: used for fast data transfer (for example, Android Beam) or payment (Google Pay). Enabled in Settings → Connected devices → NFC: data transmission via light (a special module and application is required, for example: direct connection between devices without a router (Settings → Wi-Fi → Wi-Fi Direct Settings → Connected devices → NFC.
  • 🌐 Li-Fi: transmitting data via light (requires a special module and application, e.g. Li-Fi Lamp Driver).
  • 📡 Wi-Fi Direct: direct connection between devices without a router (Settings → Wi-Fi → Wi-Fi Direct).
  • 🔗 Miracast: wireless screen transfer to a TV or monitor (Settings → Screen → Wireless display).

NFC often underestimated, but this is a useful tool. For example, you can use it:

  • Quickly connect to Bluetooth device (just touch your smartphone to a speaker or headphones that support NFC).
  • Transfer a file or contact to another Androiddevice (via Android Beam, if supported).
  • Configure automation (for example, touch the phone to the tag NFCto turn on Wi-Fi or launch the application).

Wi-Fi Direct useful when you need to transfer a large file, but there is no Internet speed higher than. y Bluetooth, and does not require a router. To use it:

  1. Enable Wi-Fi Direct on both devices.
  2. Select the device to connect from the list.
  3. Confirm pairing (you may need to enter a PIN code).
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If NFC does not work, check if the case (especially metal) or protective film is blocking it.

7. Wireless network security: how to avoid becoming a victim of hackers

Wireless networks are not only a convenience, but also potential risks. Attackers can intercept your traffic, connect to your Wi-Fi or even hack your device via Bluetooth. To avoid this:

  • 🔒 Use only secure networks: avoid open access points (without a password) or networks with encryption WEP (it can be easily hacked). The best option is WPA3 or WPA2.
  • 🛡️ Disable Bluetooth and NFCwhen not in use. This will reduce the risk of attacks through vulnerabilities in protocols (for example, BlueBorne).
  • 🔄 Update regularly firmware: manufacturers close vulnerabilities in modules Wi-Fi and Bluetooth through updates.
  • 📵 Do not connect to suspicious networks: hackers can create fake access points with names like Free_WiFi or Starbucks_Guest.

If you connect to a public network (for example, in a cafe or airport):

  • Use VPN (for example, ProtonVPN or Windscribe).
  • Disable File sharing in the network settings.
  • Do not enter logins/passwords for important services (banks, social networks) without HTTPS.

Warning: Android 10+ there is a function Randomized MAC (random MAC address), which protects against tracking over the network. Turn it on. data-i="252">Warning Settings → Wi-Fi → Advanced → Privacy → Use random MAC.

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Even if the network is password protected, this does not guarantee security. Attackers can eavesdrop on traffic through vulnerabilities in the router.

8. ADB and terminal: network management for advanced users

For those who are ready to dive deeper, ADB (Android Debug Bridge) and Termux open up almost unlimited possibilities for managing networks. Here are some useful commands:

  • 📡 List of all networks: 
    adb shell cmd wifi list-networks

    Shows saved networks and their statuses.

  • 🔍 Scanning air: 
    adb shell cmd wifi start-scan

    Starts searching for available networks.

  • 🔧 Connecting to network: 
    adb shell cmd wifi connect "NetworkName" "Password"

    Connects the device to the specified network.

  • 📵 Disable Wi-Fi: 
    adb shell svc wifi disable

    Useful if the standard settings do not respond.

To work with ADB you will need:

  1. Enable USB debugging (Settings → System → About phone → Build number (press 7 times) → Settings → System → For developers → USB debugging).
  2. Install ADB Tools on your computer (for example, Platform Tools from Google).
  3. Connect your smartphone via USB and confirm trust in the device.

For those who prefers to work directly from a smartphone, suitable Termux -terminal for Android. Install it from F-Droid and use the commands:

pkg install net-tools

ifconfig

This will show the current network interfaces and their statuses.

Warning: incorrect use ADB may cause the system to crash. Do not change settings unless you understand their purpose. For example, the command adb shell svc wifi disable disable Wi-Fi before rebooting, and you won’t be able to turn it back on through the interface.

How to turn Wi-Fi back on via ADB?

Use the command adb shell svc wifi enable. If this does not work, restart the device.

FAQ: Answers to frequently asked questions

🔍 How to find the password for a saved Wi-Fi without root?

Without root access the only way is to use ADB (if debugging is enabled) or look at the password on the router (usually it is indicated on a sticker or in the web interface at 192.168.1.1). On some devices (for example Samsung), passwords of saved networks can be seen in Settings → Wi-Fi → Tap on network → Share (a PIN code or fingerprint is required).

📵 Why does Android not connect to Wi-Fi, although the password is correct?

There are several reasons:

  • Incompatibility of standards (for example, the router works on 802.11ac, and the smartphone only supports 802.11n).
  • Failure in IP settings (try switching DHCP to static IP manually).
  • Restriction by MAC address on the router (add your device's MAC to the white list).
  • Problems with DNS (try using 8.8.8.8 or 1.1.1.1).

First reboot the router and smartphone. If that doesn’t help, reset the network settings on your phone.

🔄 How to reset the network settings if the smartphone does not respond?

If the interface freezes, use safe mode:

  1. Turn off the device.
  2. Hold the power button until the logo appears, then immediately press and hold the button volume downuntil safe mode loads.
  3. Go to settings and reset the network.

If this does not help, reset via Recovery (the combination of buttons depends on the model, usually Power + Volume up).

🛠️ Is it possible to fix the Wi-Fi module yourself?

If the problem is hardware (for example, after a fall or moisture), then it is not recommended to repair the module without soldering equipment and experience. However, you can try:

  • Dry the device (if the cause is moisture).
  • Check the antenna Wi-Fi (sometimes it moves away from the board).
  • Reflash the module via Fastboot (if there is a software failure).

In most cases, it is easier and cheaper to contact a service center.

📡 How to increase Wi-Fi range on Android?

If the signal is weak, try:

  • Change the channel on the router (via 192.168.1.1) to a less busy one (for example, 1, 6 or 11 for 2.4 GHz).
  • Use a signal repeater (repeater).
  • Enable mode 5 GHz (if the router supports).
  • Install the application WiFi Analyzer and find a place with the best signal.

On some devices (for example, Samsung Galaxy), you can enable the mode Wi-Fi Boost in the engineering menu.