Xiaomi Redmi 9 Wi-Fi Connects, But Internet Doesn't Work: A Complete Troubleshooting Guide

You are connected to your home or office network Wi-Fi on your own Xiaomi Redmi 9, but your browser keeps showing the "No internet access" error, and your messaging apps won't update? This problem is familiar to millions of users: the phone "sees" the network, shows a full signal strength, but no traffic is transmitted. In 80% of cases, the problem lies not with the router, but with the smartphone's settings.

This article will help you diagnose and fix the problem without calling a service center. We'll cover software failures (incorrect parameters) IP/DNS, conflict MAC addresses), as well as hardware nuances - from overheating of the module Wi-Fi to the point of incompatibility with new standards 802.11axAll instructions are specially adapted for Redmi 9 taking into account the features of the shell MIUI 12/13.

Before you begin tweaking the settings, make sure the problem is with your phone: check if the internet works on other devices (laptop, tablet) connected to the same network. If so, continue reading. If not, the problem is with your router or ISP, and you'll need to separate instructions.

1. Checking basic connection parameters

Start with a basic diagnostic. Open the notification panel on Redmi 9 and hold your finger on the icon Wi-Fi — this will quickly open the network settings section. Note two key points:

Connection statusIf there is an exclamation mark in a triangle or the words "No Internet access" next to the network name, this confirms a problem at the level IP configurationsIf there is no icon, but the pages don't load, it's your fault. DNS or firewall.

Connection speed. IN MIUI It's displayed under the network name (e.g., "54 Mbps"). If the value is less than 10 Mbps when located close to the router, there may be interference or standard incompatibility.

• 🔍 Check the network name (SSID)Sometimes the phone connects to a "clone" of your network (for example, TP-Link_5G_2 instead of TP-Link_5G). Delete all saved networks with similar names.
• 📶 Assess the signal levelOn . Redmi 9 module Wi-Fi Sensitive to interference from microwaves and wireless headphones. Move closer to the router.
• 🔄 Turn airplane mode on/off for 10 seconds. This will reset all network connections without losing any settings.

⚠️ Attention: If your Redmi 9 previously connected to public networks (in cafes, airports), it is possible that "broken" configurations were saved DHCPThese settings may conflict with your home network.

2. Reset network settings without losing data

The most effective way to fix software problems is to reset the network settings. Unlike a full reset (Hard Reset), this procedure does not affect photos, applications and accounts.

Go to Settings → System & device → Advanced → Reset settings → Reset Wi-Fi, mobile network, and Bluetooth settingsConfirm the action and reboot the phone. After turning it on:

• 🔑 Reconnect to the network by entering the password.
• 📱 Check your internet connection in your browser and messengers.
• 🔄 If the problem persists, proceed to the next section.

Make sure you remember your Wi-Fi password

Close all active downloads

Disable VPN (if used)

Take a screenshot of your current APN settings (for mobile internet) -->

MIUI 13 on Redmi 9 sometimes saves cache DNS even after a reset. To clear it, run:

Settings → Applications → Manage applications → Three dots (menu) → Show system → Find "DNS server" → Storage → Clear cache

3. Manual IP and DNS assignment

Automatic receipt IP addresses (DHCP) can experience issues, especially if there are many devices connected to the network. Let's try assigning static parameters:

Open Settings → Wi-Fi, tap on the name of your network and select "Change network" (in MIUI (may be called "Advanced"). Scroll down to the "IP Settings" section and select "Custom":

After saving the settings, reconnect to the network. If the internet works, the problem was DHCP server router. On Redmi 9 With firmware older than MIUI 12.5, an additional reboot may be required to apply DNS.

4. Problems with MAC address and filtering

Some routers use MAC address filtering — a unique identifier of a network device. If your Redmi 9 is not whitelisted, access will be blocked. There are also cases when the phone displays an incorrect MAC after the update.

To check and change MAC address on Redmi 9:

1. Open Settings → About phone → All settings → Status.
2. Find the line "Wi-Fi Address" - this is the current one MAC.
3. Compare it with the list of allowed devices in your router settings (usually under "Wireless → MAC Filter").

If you need to change MAC (for example, after resetting the router):

Settings → Wi-Fi → More → Advanced settings → MAC address type → Use random MAC (disable this option)

⚠️ Attention: On some firmware versions MIUI random MAC can be assigned automatically upon each connection. This interferes with routers with IP address binding. MAC - disable the function in the settings.

How to find out the MAC address of a router?

It is usually indicated on a sticker on the bottom of the device in the format 00:1A:2B:3C:4D:5EYou can also check it in the router's web interface (192.168.1.1 or 192.168.0.1) in the "Status" or "Local Network" section.

5. Conflicts with traffic saving and VPN

MIUI aggressively optimizes the network connection to save battery power, which sometimes leads to disconnections Wi-Fi. Open Settings → Battery & performance → Manage app battery consumption and check:

• 🔋 Power saving modeIf enabled, disable it or add the browser/messengers to the exceptions.
• 🌐 Limit background traffic. For Chrome, Telegram and other network applications should be set to "Unlimited".
• 🛡️ VPN connectionsEven a disabled VPN can block traffic. Delete unnecessary profiles in Settings → Advanced → VPN.

Pay special attention to the built-in MIUI Dual Apps tool (Settings → Apps → Dual appsIf you've created a duplicate messenger or browser, it may conflict with the original when you go online.

6. Hardware problems and diagnostics of the Wi-Fi module

If software methods do not help, there may be hardware problems. Redmi 9 most commonly encountered:

Wi-Fi module overheating. During long-term operation (especially in games) the chip Wi-Fi It's heating up and starting to malfunction. Check the phone's temperature—if the case is hot near the top (where the antennas are), let the device cool for 15-20 minutes.

Oxidation of antenna contactsIf the phone has been dropped or exposed to moisture, the connection between the motherboard and Wi-Fi-module. In this case, only a service center can help.

Incompatibility with new standards. Redmi 9 supports Wi-Fi 5 (802.11ac), but some routers with Wi-Fi 6 (802.11ax) may work unstably. Try setting the mode in the router settings 802.11n (up to 300 Mbps).

7. Alternative connection methods

If you restore work Wi-Fi failed, please use workarounds:

• 📶 Modem modeConnect your phone to another device via USB or Bluetooth and share the internet connection from it.
• 🔗 USB-ethernet adapterThrough an adapter USB-C → Ethernet (cost ~500 rubles) you can connect to the router via cable.
• 📱 Mobile InternetTemporarily activate data transfer (if you have a sufficient tariff).

For diagnostics it is also useful to install the application WiFi Analyzer (available in Google Play). It will show:

1. The actual connection speed (not the one displayed by the system).
2. Level of interference from neighboring networks.
3. Optimal channel for connection.

⚠️ Attention: Router settings (for example, turning on WPA3, 802.11r or Band Steering) may conflict with older firmware Redmi 9If you recently updated your router's firmware, try rolling back the changes or resetting it to factory settings.

FAQ: Frequently Asked Questions about Wi-Fi on the Xiaomi Redmi 9

Why does Wi-Fi only work near the router, but disappear in another room?

On Redmi 9 one installed Wi-Fi- a module with an antenna located at the top of the case. If you hold the phone with the antenna facing away from the router, the signal weakens by 2-3 times. Try this:

• Change the orientation of the phone (antenna to the router).
• Set a fixed channel on the router (for example, 6 instead of "Auto").
• Use a signal repeater.

Wi-Fi stopped working after updating MIUI. What should I do?

Updates MIUI 13→14 Sometimes the wireless module drivers are reset. Run:

1. Reset network settings (Section 2 of this article).
2. Clearing the cache of system applications (Settings → Applications → Management → Three dots → Show system → Wi-Fi and Bluetooth → Clear cache).
3. Roll back the update (if available) or install the latest stable firmware via Fastboot.

If the problem persists, contact the service center: the module may need to be re-flashed. Wi-Fi through EDL mode.

Can I use Wi-Fi Direct if my primary Wi-Fi is not working?

Yes, Wi-Fi Direct on Redmi 9 Uses the same module, but operates in point-to-point mode (without a router). To transfer files or connect to printers:

1. Activate Wi-Fi Direct in the settings Wi-Fi (swipe down → "Wi-Fi Direct").
2. On the second device, search for available connections.
3. Confirm pairing (no password required).

Limitation: the transmission speed will be lower than in a regular network (up to 10 Mbps).

How can I check if my ISP is blocking my Wi-Fi internet access?

Some providers (especially mobile operators when distributing from a phone) block traffic if:

• The meter has a negative balance.
• The traffic limit for the tariff has been exceeded.
• An "atypical" connection was detected (e.g. torrents).

To check:

1. Connect your phone to a mobile network (turn off Wi-Fi).
2. Try opening your provider's website (for example, lk.megafon.ru or my.beeline.ru).
3. If the site opens, but others don’t, call support.

Should I take my phone to a service center if nothing helps?

Yes, if:

• The phone doesn't see it not a single one Wi-Fi network (including public ones).
• The message "Authentication Error" appears on the screen when connecting.
• After overheating, the module stopped working completely.

The average cost of diagnostics at service centers is 500 rubles. Repair (module replacement) Wi-Fi (Or soldering contacts) costs 1,500–3,000 rubles. Back up your data before your visit!

Alternative: If your phone is under warranty, contact an authorized service center. Xiaomi — repairs may be free.