Wireless connection issues on smartphones running the operating system Android often occur suddenly. The device stops detecting the router, endlessly tries to obtain an IP address, or simply refuses to transmit data despite having a signal. In such situations, the user needs to reset WiFi settings on Android to eliminate software conflicts.
This process doesn't require advanced technical knowledge, but it's important to understand the difference between simply "forgetting the network" and completely resetting the network settings. Incorrect actions can result in the loss of saved passwords for public hotspots or Bluetooth pairings. Below, we'll detail all the available methods for restoring the module's functionality.
It's worth noting that the menu interface may differ depending on the operating system version and the manufacturer's installed shell. However, the operating logic of the system components remains the same for most devices. We'll look at universal solutions.
What's the difference between "Forget Network" and a hard reset?
Many users confuse these two concepts, although they perform fundamentally different functions. The "Forget Network" option only deletes the configuration of a specific access point. This means the phone will delete the saved password and encryption settings for this particular router but will leave other connections untouched.
A full reset of network settings is a more drastic measure. It returns all communication-related settings to factory defaults: Bluetooth, mobile data, and, of course, WiFi. This is often necessary when errors accumulate in system configuration files, preventing the protocol stack from functioning properly.
⚠️ Note: A hard reset will result in the loss of all saved WiFi network passwords and paired Bluetooth devices (headphones, watches). Make sure you know the passwords for important networks beforehand.
A hard reset is advisable when the problem is systemic. For example, if the phone won't connect to any known networks or constantly loses connection. In this case, clearing network settings is the most effective software solution before flashing.
Method 1: Deleting a specific network profile
If the problem occurs with only one router, such as a home router, there's no need to touch the global settings. Simply delete the profile for that network. To do this, go to Settings → Connections → WiFi (path may vary).
Find your network in the list and tap the gear icon or long-press its name. In the menu that appears, select "Delete" or "Forget Network." Your phone will then completely clear the cache and encryption keys for this access point.
Reconnecting will require you to re-enter the password. This often helps if the router has changed the broadcast channel or security settings, and the smartphone is trying to use old, outdated login information.
- 📱 Open the wireless network settings on your device.
- 🔍 Find the problematic network in the list of available or saved ones.
- 🗑️ Select the "Forget network" or "Delete profile" option.
- 🔄 Try connecting again by entering your password.
It is important to understand that this method does not affect the operation of other network interfaces. Your Bluetooth headsets And your mobile internet settings will remain unchanged. This is the safest way to perform initial diagnostics.
Method 2: Reset all network settings on Android
If deleting the profile doesn't help, a deeper cleanup is required. In modern versions of Android (starting with Android 10), this feature is located in a separate menu. It allows you to reset WiFi, Bluetooth, and mobile network settings without affecting personal files, photos, or apps.
To perform the operation, go to Settings → System → Reset settings (or General settings → Reset). Select "Reset Network Settings." The system will ask for confirmation and a screen unlock code.
☑️ Checklist before reset
After confirmation, the phone will reboot or simply apply the changes. All network interfaces will return to their "as is" state. This eliminates IP address conflicts, DNS errors, and communication module driver failures.
| Parameter | Before the reset | After reset |
|---|---|---|
| Saved WiFi | Eat | Removed |
| Bluetooth pairs | Eat | Removed |
| APN settings | Changed | Factory |
| Personal files | Saved | Saved |
⚠️ Note: On some smartphone models (e.g., older Samsung or Xiaomi models), the option may be labeled "Reset settings" without specifying "network." Carefully read the on-screen description before confirming to avoid losing data.
Using the engineering menu and codes
Advanced users can access the engineering menu. This is a hidden section of the system designed for testing hardware. Access is achieved by entering a special code in the dialer. The most common code for testing WiFi is: ##4636##.
In the "Testing" menu that opens, select "WiFi information." Here you can choose the "Scan only" command or forcefully disable and enable the module at the driver level. A "Disconnect" option is also available, which terminates the connection more aggressively than the standard menu.
##4636## -> WiFi information -> DisconnectUse this method with caution. Changing unknown parameters in the engineering menu may cause the radio module to operate unstable. It is recommended to use only the test and connection reset functions, without changing regional settings or signal strength unless necessary.
- 📞 Open the Phone app (dialer).
- 🔢 Enter the code
##4636##(may not work on some firmware). - 🛠️ Go to the WiFi testing section.
- 🔄 Run commands to disable/enable or reset statistics.
It's worth remembering that on many modern smartphones, access to the engineering menu is blocked by the manufacturer or carrier. In this case, this method won't work, and you'll have to rely on the default system settings.
Why might the code not work?
Android smartphone manufacturers often hide the engineering menu from regular users to prevent accidental device damage. On Samsung, Huawei, and Xiaomi devices, access to these codes is often blocked by software or requires special ADB permissions.
Reset via ADB (for advanced users)
If your phone's interface is locked or unresponsive, you can use USB debugging and the utility ADB (Android Debug Bridge)This method requires a connection to a computer and installed drivers. It allows you to send system commands directly.
To reset network settings, use a command that clears the network configuration database. First, you need to get a list of packages responsible for the settings, then clear their data. This is similar to a full reset via the menu, but it's forced.
adb shell pm clear com.android.providers.settingsRunning this command will restart network services. This method is effective for software freezes, where the default interface becomes unresponsive. However, it requires USB debugging to be enabled in the Developer Options menu.
⚠️ Warning: Using ADB commands carries risks. Entering a command incorrectly may reset other system settings or cause OS instability. Use only if you are confident in your actions.
After executing the command, the phone may reboot automatically. If this doesn't happen, it's recommended to reboot manually to apply the changes. This is a powerful tool in any mobile repair technician's arsenal.
What to do if resetting doesn't help
There are situations when even a full reset doesn't restore Wi-Fi. In this case, the problem may be deeper. Perhaps the operating system files are corrupted or, worse, the Wi-Fi itself has failed. WiFi module (hardware failure).
The first step is to check the work in Safe modeBooting in this mode disables all third-party apps. If WiFi works reliably in Safe Mode, then the conflict is caused by an installed app (such as a VPN, antivirus, or internet accelerator).
It's also worth checking the date and time. An incorrect system clock can cause security certificate errors, causing the phone to reject connections to secure networks. Synchronize the time via the network or set it manually.
- 📅 Check that the date and time are set correctly.
- 🛡️ Boot into Safe Mode to avoid software conflicts.
- 📡 Test the connection with other routers (distribute the Internet from another phone).
- 🔨 Consider performing a factory reset.
If nothing helps, and the phone doesn't detect any networks even after a firmware update, it likely needs repair at a service center. Wi-Fi chip failure is a common issue on many smartphone models after drops or water damage.
Frequently Asked Questions (FAQ)
Will my contact list and photos be deleted when I reset my network?
No, reset network settings (Reset Network Settings) affects only connection settings: WiFi, Bluetooth, and mobile data. Your personal files, contacts, photos, and installed apps will remain safe and secure.
Do I need to reflash my router if my phone won't connect?
Not necessarily. First, try resetting the settings on your phone. If the problem persists across all devices in your home, then it might be worth rebooting or resetting the router itself. A simple router reboot often helps.
Is it possible to recover deleted WiFi passwords?
Directly from your phone after a reset – no, they are permanently deleted. However, if you have access to the router's admin panel, you can view or change the password there. Passwords may also be saved to your Google account (for Android 10+) if syncing was enabled.
Why does the phone connect after a reset, but it says "No Internet access"?
This may indicate a problem with the DNS servers or an IP address conflict. Try changing the IP settings from "Static" to "DHCP" in your network's WiFi settings or manually entering Google's DNS (8.8.8.8).