How to improve your Xiaomi Internet signal: from Wi-Fi to mobile

Have you noticed that your Xiaomi has become worse at catching Wi-Fi, and pages in the browser are loaded for eternity? Or the 4G/5G mobile Internet is constantly “lost” in the room? The problem of weak signal is familiar to many owners of smartphones of this brand — especially when it comes to budget models like the Redmi Note 12 or POCO X5. But the phone is not always to blame: in 60% of cases, the fault is the network settings, interference from neighbors or outdated equipment.

In this article, we will discuss 7 Proven ways to improve the signal of the Internet on Xiaomi – from basic (reboot router) to advanced (change) DNS and tuning MTU). All methods tested on current versions MIUI 14/15 They work like flagships (Xiaomi). 14 Ultra, and on older devices (Redmi) 9A). And at the end, you're waiting. FAQ Answering frequent questions, such as why your phone is losing your network at night or how to check your internet speed.

1. Checking the current state of the network: diagnosis before treatment

Before you change anything, you need to know where the bottleneck is, and a weak signal can be triggered by:

• 📶 Problems on the provider side (especially relevant for mobile Internet).
• 🔄 Incorrect settings of the router (Wi-Fi channel, bandwidth, mode of operation).
• 📱 Hardware limitations of the smartphone (weak receiver, outdated firmware).
• 🏠 External interference (walls, neighbors with powerful routers, microwaves).

To diagnose the problem:

1. Run a WiFi Analyzer app on your phone (or something like NetSpot) that will show you:

Speedtest

FAST.com

mobile

Critical point: if the speed on the cable (on PC) and Wi-Fi (on the phone) differs by 5+ times - the problem is precisely in the settings of the router or phone. If the difference is up to 20% - it is normal (loss on wireless transmission).

2. Optimization of Wi-Fi settings on Xiaomi smartphone

Many users don't know that MIUI has hidden network settings that you can tweak for a better signal.

Step 1: Enable Smart Network Switch

This feature automatically switches the phone from Wi-Fi to mobile Internet if the signal is weak.

1. Go to Settings → Connections and Sharing → Wi-Fi.
2. Slip on three dots in the upper right corner → Additional features.
3. Enable Smart Switching and Auto Connection to Open Networks (if necessary).

Step 2: Change Wi-Fi mode to 5 GHz (if the router supports)

The 5 GHz range is less loaded and gives you more speed, but it's worse through walls.

1. In the same Wi-Fi settings, tap on your network.
2. Select the frequency range → 5 GHz (if available).
3. If the signal is missing, go back to 2.4 GHz or select Auto.

For 5 GHz, choose channels 36-48 or 149-165 (less loaded).

2. Set the width of the channel

The wider the channel, the higher the speed, but less stability.

3. Enable WMM (Wi-Fi Multimedia)

This feature prioritizes traffic (such as video and voice calls) and is enabled in router settings under Wi-Fi → Additional → WMM (or QoS).

4. Update router firmware

Outdated software can cause conflicts with new smartphones. Check for updates in the router's web interface (usually at 192.168.1.1 or 192.168.0.1).

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If you have a Xiaomi router, upgrade it through the Mi WiFi app – there are often patches to improve compatibility with smartphones of the same brand.

4.DNS Change: Why It Matters and How to Do It

DNS-servers translate domain names (e.g., google.com) into IP-If the server of the provider is slow or blocked, the sites will open with a delay, even with a good signal:

How to change DNS to Xiaomi:

1. Go to Settings → Connections and Sharing → Private DNS.
2. Select the host name of the private DNS provider.
3. Enter one of the addresses: 🔹 dns.google (Google DNS). 🔹 1dot1dot1dot1.cloudflare-dns.com (Cloudflare). 🔹 dns.quad9.net (Quad9 — Blocking malicious sites).

Save and restart the phone.

How to check if it worked:

Run the DNS Leak Test. If you see your DNS (like Google or Cloudflare) in the results, it's set up correctly.

5 Advanced settings: MTU, IPv6 and power saving modes

If the basic methods don't work, you have to dig deeper, and these parameters affect the stability of the connection, but you only have to change them if you understand what you're doing.

MTU (Maximum Transmission Unit)

MTU is the maximum size of a data packet. If the value is too large, the packets are cut, which slows down the connection. The optimal value for most networks is 1472 (for IPv4).

How to change to Xiaomi:

1. Install the Termux app from F-Droid.
2. Type the command: su ifconfig wlan0 mtu 1472 (root rights required!).
3. Check the changes via ping: ping -M do -s 1472 ya.ru If packets are not fragmented - the value is suitable.

2. disable IPv6 (if not in use)

Many providers still don't support IPv6 properly, causing delays.

1. Go to Settings → Connections → Wi-Fi.
2. Put it on your network → Additional → IP settings.
3. Select IPv4 (instead of DHCP or IPv4/IPv6).

Advantage: automatically switches devices between nodes without breaks.

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Before buying a repeater, check if it supports your Wi-Fi range (2.4 or 5 GHz).Some budget models only work with 2.4 GHz.

7 Mobile Internet: How to Improve 4G/5G Signal

If you have problems with mobile internet (not Wi-Fi), try these methods:

1. Manually select the operator's network

Automation doesn't always choose the most stable network.

1. Go to Settings. → SIM-maps and mobile networks → Choice of network.
2. Turn off Automatically and select the operator manually (e.g., 4G MTS instead of 2G MTS).
3. If you have 4G Only (LTE) option, turn it on (sometimes 3G interferes).

2. Update the APN settings

APN (Access Point Name: The operator's Internet access point, if the settings are lost, the Internet will work slowly or not at all. APN for popular operators (2026):

How to change APNs:

1. Go to Settings. → SIM-maps and mobile networks → Access points (APN).
2. Tap it on three points. → New access point.
3. Enter the data from the table and save it.
4. Select a new APN from the list.

3. Use applications to amplify the signal

Some programs help to “push” the smartphone to choose a more stable tower:

• 📱 Network Signal Guru (shows nearby towers and their loadings).
• 📱 4G LTE Signal Booster (optimizes modem settings).

Attention: these applications are not magical, they only help you find a better tower, and if there is no signal physically (for example, in the basement), they will not help.

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If the mobile Internet is gone after the MIUI update, try resetting the network settings: Settings → System → Reset → Network settings reset.

FAQ: Answers to Frequent Questions