Why Xiaomi Phone Does Not Work Wi-Fi: 10 Reasons and Solutions

Have you noticed that your Xiaomi or Redmi Wi-Fi is constantly hanging, pages are loading forever, and 1080p videos are constantly buffered? The problem is familiar to millions of users — and it is not always connected to the router. 70% of the time, the settings of the smartphone, outdated software or hardware limitations of budget models are to blame. In this article, we will analyze all possible causes, from banal to exotic, and give clear instructions on how to return a stable Internet.

If you have a Xiaomi 12T Pro or newer, the problem may lie in aggressive MIUI optimization - the brand shell often "strangles" background processes, including network connections. Owners of older models (for example, the Redmi Note 8 2019) should check the status of the Wi-Fi module - over time it wears out. But do not rush to carry the phone to the service: in 90% of cases, the problem can be solved by yourself in 10 minutes.

1.Router problems: why all devices work and Xiaomi doesn’t

The first thing to rule out is a router malfunction, and if a laptop, a TV, or other gadgets are connected to the same network and they work without any complaints, the problem is definitely with the smartphone.

• 🔄 Dual-band Wi-Fi (2.4 GHz vs 5 GHz): Many Xiaomi are bad at catching a 5 GHz network, especially if the router is behind multiple walls. Try manually switching to 2.4 GHz in the router settings.
• 📶 Channel congestion: 2.4GHz channels are often congested in apartment buildings. Use applications like WiFi Analyzer to find a free channel (e.g. 1, 6 or 11).
• 🔒 Type of encryption: if the router is using an outdated WEP or TKIP, MIUI It can connect, but it's going to be a slow speed. WPA2-AES or WPA3.

🔹 How to check: connect to the same network from another phone (for example, iPhone or Samsung), if the speed is normal, the problem is Xiaomi.

2. MIUI settings that "strangle" Wi-Fi

MIUI is known for its aggressive optimization, which kills background processes to save battery life, and sometimes a Wi-Fi module gets handed out.

1. Turn off Adaptive Battery: Go to Settings → Battery → Battery Mode and select Performance over Balanced.
2. Add apps to exceptions: for YouTube, Chrome, and other voracious programs, turn on Unlimited in Settings → Apps → Permissions → Auto Run.
3. Turn off Smart Connection: This feature automatically switches the phone from Wi-Fi to mobile data if the signal is weak. Find it in Settings → Wi-Fi → More

⚠️ If you have Xiaomi with you MIUI 14 and later, note the Wi-Fi Assistant feature, which can force the Internet to be turned off if the smartphone is in standby mode for a long time. → Wi-Fi → Wi-Fi Assistant.

Disable adaptive battery |Add applications to autorun exceptions |Disable smart connection |Check Wi-Fi Assistant (MIUI 14+) |Update MIUI to the latest version-->

3.Outdated software: firmware and Wi-Fi drivers

If your Xiaomi hasn’t been updated in a long time, the problem could be Android kernel bugs or Wi-Fi drivers. For example, MIUI 12.5 had a massive connection-breaking bug when switching between access points. And in the Redmi Note 10 Pro on MIUI 13, some users complained about a speed drop of up to 1 Mbps after the upgrade.

📌 How to update software:

1. Go to Settings → About Phone → Update MIUI.
2. If there are no updates, check manually: download the latest firmware for your model from the official Xiaomi website and install through Settings → About Phone → Select a firmware file.

⚠️ Note: If Wi-Fi stopped working after the update, try to roll back to the previous version. MIUI. To do this, download the old firmware and install it through Fastboot (instructions are on the forum). 4PDA).

Hardware problems: wear of the module or antenna

If all software methods have been tried and Wi-Fi still doesn’t work well, it could be physical damage.

• 📱 Retired antenna: in budget models (Redmi) 9A, Poco M3) Wi-Fi antenna is often attached to double-sided tape, which eventually fades.Symptoms: the signal disappears when you tilt the phone or touch the back cover.
• 🔥 Module overheating: If the phone is warming in the top area (where the Wi-Fi module is located), the speed may drop. AIDA64 component bcmdhd_wlan — if it is higher 60°C, the module requires replacement.
• ⚡ Problems after the fall: if the phone fell, it could damage the Wi-Fi connector or the chip itself.

🔧 How to check for hardware malfunction:

1. Connect to Wi-Fi and run a speed test. If the speed jumps from 1 Mbps to 50 Mbps for no reason, it's a sign of poor antenna contact.
2. Look at the signal indicator: if it constantly “jumps” from 3-4 divisions to 0-1, the problem is the antenna.
3. Try connecting to another network (such as a cafe or at friends') if it's the same, it's the phone.

💡

If you have a Xiaomi with a removable back cover (like a Redmi 4X), you can check the antenna mount yourself. Carefully remove the lid and press the antenna plume - if the signal improves, glue it with heat glue.

5. Conflict with VPN, firewall or antivirus

Many users are installing VPN-applications (e.g. 1.1.1.1 or ProtonVPN) or antiviruses (Avast, Kaspersky) that can block or restrict traffic, and the problem does not appear immediately, for example, after an update. MIUI some VPN Begin to conflict with system certificates.

🛡️ How to check:

1. Turn off the VPN in the application settings.
2. Go to Settings → Applications → Application Management, find your VPN/antivirus and Clear the cache.
3. Try connecting to Wi-Fi in incognito mode (if the problem is only in the browser).

📊 List of problematic applications:

DNS problems: why websites don’t open and speed is normal

If Speedtest shows high speed, but pages load forever or give an error DNS_PROBE_FINISHED_NXDOMAIN, problem DNS-By default, Xiaomi uses servers. DNS your provider, who often slow down or block websites.

🔧 How to change DNS Xiaomi:

1. Go to Settings → Wi-Fi, click on your network and select Change Network.
2. Enable Additional settings and change IP settings to Static.
3. In the DNS 1 and DNS 2 fields, type 8.8.8.8 8.8.4.4 (this is Google’s DNS) or 1.1.1.1 1.0.0.1 (DNS from Cloudflare).

⚠️ Attention: if after the shift DNS Some sites (e.g., banking sites) have stopped opening, and some providers have blocked access to their services when using third-party sites. DNS.

💡

Changing the DNS is the fastest way to speed up loading of sites if the problem is not the speed of the Internet, but the resolution of domain names.

7. Cache and network data overload

Over time, the phone accumulates a cache of network settings, which can conflict with new connections, especially if you often connect to different Wi-Fi networks (at home, at work, in a cafe).

🧹 How to Clean a Network Cache:

1. Go to Settings → Applications → Application Management.
2. Find Settings (system application) and click Storage → Clear cache.
3. Return to Settings → System → Reset → Reset network settings and confirm the action.

🔹 What will it do:

• 📱 Remove saved passwords from Wi-Fi (you will have to re-enter them).
• 🔄 Reset the proxy settings and VPN.
• 🚀 Remove conflicts between old and new connections.

8.Alternative solutions: from rollback of firmware to replacement of module

If none of the above has worked, radical measures remain:

• 🔙 Reverse to the old version MIUI: This is especially true if the problems started after the update. F3 They complained about Wi-Fi after switching to the MIUI 13.
• 🛠️ Replacement of Wi-Fi module: in service centers it costs from 1,500 to 3,000 ₽ The most common modules are changed in the Redmi Note 8 Pro and Xiaomi Mi 9.
• 📡 Use of external USB Wi-Fi adapter: suitable for phones with support OTG (For example, Xiaomi Black Shark. Adapter costs 500. ₽.

💡 Advice for owners of older Xiaomi: if you have a model of 2018 or older (Redmi 5, Mi) A1), Try installing custom firmware (like LineageOS or Pixel Experience), which often solves Wi-Fi problems, as custom firmware uses updated drivers.

FAQ: Frequent questions about Wi-Fi on Xiaomi