Wi-Fi on Xiaomi phone: reasons and 12 working solutions

Have you noticed that your Xiaomi has become worse at catching Wi-Fi: the signal disappears in the next room, the speed drops to zero, and sometimes the network does not connect at all? The problem is familiar to many owners of smartphones of this brand – from the budget Redmi Note to the flagship Xiaomi 14. In 80% of cases, the weak signal is associated not with a malfunction of the device, but with software settings or external interference.

In this article, we’ll look at all the possible causes of poor Wi-Fi reception on Xiaomi, from the banal distance to the router to the hidden bugs of MIUI firmware. You’ll get step-by-step instructions for diagnosing and solving the problem, including rare methods that are not mentioned in standard manuals. For example, did you know that on some Poco and Redmi models, the signal is degraded due to the power saving mode on for background processes?

Before you take your phone to the service center, check out all the points in this article. 9 out of 10 cases you can get back stable Wi-Fi without repair — just set up the network correctly or update the software. Let's start with the simplest!

1. Check the source of the problem: phone or router?

The first thing you need to do is identify the culprit for the bad signal, and often users are sinning on their smartphones, even though the problem is in the router or the ISP.

• 📱 Test on another device: connect a laptop, tablet or second phone to the same network. If Wi-Fi is stable, your Xiaomi is the problem.
• 🔄 Reboot router: Turn the router off the socket for 30 seconds, then turn it back on. DNS and temporary errors.
• 📡 Channel check: if neighbors have many Wi-Fi networks on the same channel (e.g. 6th), they cause interference. Use the WiFi Analyzer (Android) app to analyze.

If other devices are also “slowing down” or shutting down, the problem is with the router or ISP. Xiaomi models with a Qualcomm chipset (such as the Snapdragon 8 Gen 2) often have conflict with TP-Link routers on firmware older than 2022 – in which case only updating the router’s firmware will help.

2. Optimize your Wi-Fi settings on Xiaomi

A weak signal may be caused by incorrect network settings in the smartphone itself. Go to Settings → Wi-Fi and follow the following steps:

1. Turn off Smart Switch: This feature automatically switches to mobile data when Wi-Fi is weak, but often works too early. Find it in Additional → Smart Switch and deactivate.
2. Turn on 5GHz mode: If your router supports dual-band Wi-Fi, connect to a network with 5G suffix. This range is less busy and provides a more stable connection (but worse passes through walls).
3. Forget the network and connect again: click on your network name → Delete → connect again by entering the password. This will reset the saved IP settings.

Some MIUI 14+ firmware has a hidden option called High Performance Wi-Fi Mode to activate it:

1. Open the Settings. → The phone.
2. Tap 5 times on the MIUI version to turn on the developer mode.
3. Back to Settings → Additionally. → For developers.
4. Find Aggressive Wi-Fi Switch and turn it on.

Make sure 5GHz mode is enabled (if supported)

Disable Smart Switching to Mobile Data

Remove the network and connect again

Check for MIUI updates

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3. Update firmware and Wi-Fi drivers

Manufacturers regularly release updates to fix connection bugs. On Xiaomi, Wi-Fi issues are often resolved after a MIUI or kernel update.

1. Go to Settings → About the phone → System update.
2. If you have a new version, download it and install it. Importantly, use stable firmware, not beta!
3. After the update, reboot the phone.

If there are no updates, but the problem remains, try manually reinstalling the Wi-Fi driver via Fastboot (for advanced users).

fastboot flash wifi [name file driver.img]


fastboot reboot

Driver files can be found on the XDA Developers or 4PDA forums for your model. On Xiaomi smartphones with a MediaTek chipset (such as Redmi 12C), after manually flashing the Wi-Fi driver, you may need to reset your network settings via ##4636## → “Wi-Fi Information” → “Reset”.

4. Reset network settings to factory

If previous methods didn't work, try a full reset of network settings, which will delete all stored Wi-Fi networks, passwords and mobile Internet settings, but often solves connection problems.

1. Open Settings → System and device → Resetting settings.
2. Choose Network Reset (not to be confused with a full phone reset!).
3. Confirm the action and wait for the reboot.

After discharge:

• 🔧 Connect to Wi-Fi again by entering a password.
• 📲 Check if the traffic saving mode is included in the Settings → Connections and sharing → Saving traffic.
• 🔄 If used VPN, Disable it temporarily – some services block local networks.

⚠️ Attention: On phones with MIUI 13 and older network reset may also delete Mi Account and Google Pay data.Before the procedure, make sure you have backups.

5. Check the physical condition of the Wi-Fi antenna

If software methods didn't help, the problem could be hardware. On Xiaomi smartphones, the Wi-Fi antenna is usually located at the top of the case (near the camera module).

• 📱 Integrity of the body: cracks or dents near the antenna may disrupt the signal.
• 🛠️ Building quality: on some models (e.g. Poco) X3 Pro) antenna is poorly soldered to the motherboard - it is a factory marriage.
• 🔋 Battery impact: Bloated battery can put pressure on board and disrupt Wi-Fi module.

For diagnosis:

1. Remove the back cover (if possible without damage).
2. Examine the antenna contacts – they should be clean and not oxidized.
3. Check if the antenna plume is moving away from the motherboard.

⚠️ Note: If you don't have experience disassembling smartphones, don't try to repair the antenna yourself. IP-certification (e.g. Xiaomi 13 Pro) incorrect build will result in loss of water resistance.

6. Alternative methods of signal amplification

If the standard methods didn’t work, try non-obvious solutions that often help in difficult cases:

• 📶 Use a Wi-Fi Repeater: If the router is far away, install a repeater (e.g. Xiaomi Wi-Fi Repeater 2) closer to the phone.
• 🔌 Connect by cable: using an adapter USB-C to Ethernet (e.g, UGREEN CM569) You can get a wired connection at a speed of up to 1 Gbps.
• 📱 Activate modem modem: sometimes it is more stable to distribute the Internet from another phone (for example, through the access point mode on the iPhone).

For owners of Xiaomi root-rights there is a radical method – replacement MAC-Some routers block devices with "suspicious» MAC, It's a cliff, it's a cliff, it's a change. MAC:

su


ifconfig wlan0 hw ether XX:XX:XX:XX:XX:XX

Where XX:XX:XX:XX:XX:XX — new MAC-Address (can be generated at macvendorlookup.com).

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If you often lose connection to public networks (hotels, airports), try connecting via Private DNS in Wi-Fi settings. Use dns.google or 1.1.1.1 (Cloudflare).

7. When to contact the service center?

If none of the methods worked, the problem is probably a hardware malfunction.

• 🛠️ The phone doesn’t see any Wi-Fi network (even after a reset).
• 🔥 The antenna or its contacts are physically damaged (visible when disassembled).
• 📉 Signal disappears when the phone is heated (may indicate problems with soldered contacts).

The cost of repairing a Wi-Fi module on Xiaomi in 2026:

Before the service visit:

1. Make a backup of the data (Settings → Additional → Backup).
2. Find out if the warranty is maintained after repair (on official Xiaomi services - yes).
3. Check the reviews about the workshop - often unscrupulous services change the details to used.

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If the phone is warranty, don't disassemble it yourself! opening the case will void Xiaomi's warranty obligations.

FAQ: Frequent questions about Wi-Fi on Xiaomi