How to enable Wi-Fi on a Redmi 9 smartphone: all the methods + troubleshooting

Smartphone Xiaomi Redmi 9 It remains a popular choice due to its balance of price and functionality, but even experienced users sometimes experience difficulties connecting to wireless networks. For example, after updating MIUI or performing a factory reset, the Wi-Fi button may "disappear" from the notification bar and appear grayed out in settings. In this article, we'll look into this. All current methods for turning on Wi-Fi on Redmi 9, including hidden functions and workarounds for common errors.

The model's special feature is the use of a chip MediaTek Helio G80, which in rare cases conflicts with the firmware of some routers (especially with the enabled WPA3 encryption). If your phone doesn't see a network that other devices detect, the problem may lie not with your phone, but with your router settings. We'll cover how to diagnose these issues and what to do if needed. Redmi 9 refuses to connect to Wi-Fi even after turning on the module.

For convenience, the instructions are divided into blocks: from basic actions to advanced methods (including ADB commands (for experienced users). If you are in a hurry, use the fast way via the notification panel (section 2). For more complex issues, proceed to sections 5–7.

1. Quickly turn on Wi-Fi via the notification panel

The most obvious and fastest method is to use notification curtainsOn . Redmi 9 It opens by swiping down from the top of the screen. However, there are some nuances:

• 📱 If the curtain does not open, check whether it is activated Silent mode (on some firmware it blocks gestures).
• 🔍 The Wi-Fi button may be hidden under the More button (three dots or a down arrow).
• 🔄 If the icon is gray and inactive, try reboot the phone (hold the power button for 10 seconds).

Algorithm of actions:

1. Swipe down from the top edge of the screen to open the notification panel.
2. Find the icon Wi-Fi (antenna with waves) and tap it. If it's not there, tap "More" and drag the icon to the main panel.
3. Wait 5-10 seconds: a blue activity indicator should appear next to the icon.

Important: On some MIUI versions, pressing the Wi-Fi button opens a network selection menu. If this doesn't happen, proceed to the next method.

2. Turn on Wi-Fi through your phone settings

If the notification panel isn't responding or the Wi-Fi button is missing, try using the settings menu. This method works even if MIUI crashes.

Instructions:

1. Open the app Settings (gear icon on the home screen or in the application menu).
2. Go to the section Wi-Fi (usually located at the top of the list).
3. Turn on the switch in the upper right corner. If it's gray, double-tap it.
4. Select the desired network from the list and enter the password (if required).

If the switch is inactive or missing:

• 🔧 Check if it is turned on airplane mode (airplane icon in the curtain or in the settings).
• 📵 Make sure your SIM card is inserted correctly—some firmware versions block Wi-Fi access without it.
• 🔄 Reboot your router (unplug it for 30 seconds).

⚠️ Attention: On Redmi 9 It may work with MIUI 12.5 and newer firmware Automatic Wi-Fi shutdown during prolonged inactivity. To avoid this, go to Settings → Wi-Fi → Advanced → Turn off Wi-Fi in sleep mode and select "Never".

3. Voice control: turn on Wi-Fi via Google Assistant

If your touchscreen is unresponsive or you prefer voice commands, use Google AssistantThis method works even on a locked phone (if the "Okay Google" option is enabled).

How to activate:

1. Tell: "Ok Google, turn on Wi-Fi» or press and hold the button Home (if it is physical).
2. Confirm the command with your voice or by tapping the screen.
3. Wait for the “Wi-Fi is on” message and select the network to connect to.

If the Assistant does not respond:

• 🎤 Check if it's enabled voice input in Google settings (Settings → Google → App settings → Search, Assistant & Voice → Voice Match).
• 🌐 Make sure your system language is set to Russian (The Assistant may not recognize commands in other languages.)
• 🔊 Turn it off Do Not Disturb mode - It blocks voice commands.

Redmi 9 supports and Xiaomi's built-in voice assistant (Xiao AI), but its functionality is limited to Chinese ROMs. On global versions of MIUI, it's better to use Google Assistant.

4. Advanced Methods: Enabling Wi-Fi via ADB and the Engineering Menu

If standard methods don't work, the problem may be a software glitch in the Wi-Fi module. In this case, we can help engineering menu or ADB commandsThese methods require caution—incorrect actions may result in a reset.

Method 1: Engineering menu (for experienced users)

1. Open the app Telephone and enter the combination: ##4636##.
2. Select an item Wi-Fi information (or Wi-Fi stats).
3. Click Enable Wi-Fi (if the button is active).
4. Restart your phone.

Method 2: ADB commands (requires a PC)

If the engineering menu is unavailable, connect your phone to your computer and run:

adb shell svc wifi enable
adb shell am broadcast -a android.intent.action.WIFI_STATE_CHANGED -e state 3

To do this:

1. Download Platform Tools from the Android website.
2. Turn on USB debugging on the phone (Settings → About phone → MIUI version - tap 7 times, then return to Settings → Advanced → Developer options → USB debugging).
3. Connect Redmi 9 to your PC and run commands in the terminal.

⚠️ Attention: Using ADB can cause network settings to resetIf you enter incorrect commands, do not change other parameters in the engineering menu without understanding their purpose!

What to do if ADB doesn't recognize the device?

1. Make sure you have installed the drivers for MediaTek Helio G80 (download from Xiaomi website).

2. Try another USB cable (original from Redmi 9).

3. Enable the "Allow USB debugging (safe mode)" option in developer options.

5. Typical problems and their solutions

Even after turning on Wi-Fi Redmi 9 may not connect to the network. Let's look at the most common errors and how to fix them.

If the problem persists, check:

• 📶 Signal level: if it is weak (1-2 bars), try moving closer to the router or using Wi-Fi repeater.
• 🔄 Router channel: on Redmi 9 There may be interference on channels 12-14 (manually set channel 6 or 11).
• 📱 MIUI updates: come in Settings → About phone → System update and install the latest patches.

6. Resetting network settings: a last resort

If none of the methods helped, do the following: reset network settingsThis will delete all saved Wi-Fi networks, Bluetooth devices, and mobile data settings, but will not affect any personal data.

Instructions:

1. Go to Settings → System and device → Advanced → Reset settings.
2. Select Reset Wi-Fi, mobile network, and Bluetooth settings.
3. Confirm the action by entering the PIN code or pattern.
4. After rebooting, turn on Wi-Fi again and connect to the network.

If resetting doesn't solve the problem, it might be faulty. Wi-Fi module (Repair requires replacement of the antenna or chip). In this case, contact the service center. Xiaomi.

⚠️ Attention: On some MIUI firmwares, after a reset it may disappear notification barTo return it, go to Settings → Display → Notification panel and turn on the display.

7. Boost your Wi-Fi signal Redmi 9: additional tips

Even if Wi-Fi is turned on and connected, internet speed may be slow. Here's how to improve stability:

• 📡 Change the position of the router: Place it on an elevated surface, away from metal objects and microwaves.
• 🔗 Use Mesh systems: If the area of ​​the house is large, one router may not cover all the rooms.
• 📱 Disable auto-connection: In the Wi-Fi settings, disable the "Auto-connect to open networks" option - this will prevent you from connecting to weak points.
• 🔄 Configure QoS on your router: prioritize traffic for Redmi 9 by MAC address.

To check your actual speed, use apps like Speedtest or WiFi AnalyzerIf the speed is below 10 Mbps when connected to a router in one room, the problem is most likely with the provider or router, not the phone.

FAQ: Frequently asked questions about Wi-Fi on Redmi 9

Why Redmi 9 Can't connect to Wi-Fi after MIUI update?

Updates sometimes reset network settings. Try this:

1. Forget network (Settings → Wi-Fi → Long press on the network → Forget).
2. Restart your phone and router.
3. Manually enter the IP address (in the network settings, select “Static IP” and enter the data from your router’s range).

Is it possible to turn on Wi-Fi when it is turned off? Redmi 9?

No, the Wi-Fi module only works when the phone is turned on. However, some custom firmwares support it. Wi-Fi sleep mode, but this is not an official MIUI feature.

How to share Wi-Fi with Redmi 9 to another phone?

Activate modem mode:

1. Settings → Hotspot & Tethering → Portable Hotspot.
2. Set up the network name (SSID) and password.
3. Connect the second device to the created point.

Limitation: on Redmi 9 The maximum number of connected devices is 8.

What to do if Wi-Fi works, but websites won't open?

The problem may be with DNS. Try:

• Change DNS to 1.1.1.1 (Cloudflare) or 8.8.8.8 (Google).
• Disable VPN (if used).
• Check your proxy settings (Settings → Wi-Fi → Long press on the network → Change network → Advanced → Proxy — should be "No").

How to check if the Wi-Fi module is working Redmi 9?

Take the test:

1. Turn on Wi-Fi and check if the phone is found at least one network.
2. Connect to the hotspot from another phone (in tethering mode).
3. If no networks are detected at all, the module is faulty.

For accurate diagnosis, use the app WiFi Analyzer - it will show the signal level and available channels.