How to set the maximum speed of the Internet on the Xiaomi phone: from basic settings to hidden chips MIUI

Have you noticed that the internet on your Xiaomi, Redmi or POCO is slower than on other devices? download speeds "slow down", 1080p video is constantly buffered, and online games are lagging even with a full 4G signal? The problem is not always with the operator or router - 70% of the time the wrong settings of the smartphone itself are to blame.

In this article, we’ll look at all the ways Xiaomi phones can speed up the internet, from basic (switching between 3G/4G/5G) to advanced (manual APN setup, DNS optimization and hidden MIUI features). You’ll learn how to get your smartphone to use the maximum speed of the mobile network, even if the operator artificially limits it. All the instructions are relevant for MIUI 14/15 and models from Redmi Note 10 to Xiaomi 14 Ultra.

1. Checking the current speed: how to understand what exactly is braking

Before you set up a network, you need to pinpoint the problem. Slow Internet can be caused by:

• 📶 Weak signal (even with 4 communication icons, the real level can be low)
• 🖥️ Operator network congestion (peak hours, poor coverage in your area)
• 📱 Wrong phone settings (APN, network, DNS)
• 🔋 Energy conservation (MIUI Limits background data transmission)

Use accurate diagnostic tools:

1. Install the Speedtest by Ookla or nPerf app.
2. Run the speed test at least 3 times in different conditions (home, street, subway).
3. Compare the results with the average of your operator.

If the speed on Wi-Fi is normal, and mobile Internet slows down – the problem in settings SIM-If both types of connections are slow, the phone itself is to blame (e.g., traffic saving mode is on).

⚠️ Attention: Speed tests are only performed when switched off. VPN Simultaneous use of Torrent or YouTube in the 4K distort.

2. Mobile Internet Optimization: Network and APN Choice

By default, Xiaomi often chooses not optimal network settings, especially if you inserted the SIM-A card from a new operator. Here's how to fix it:

2.1. Manual switching between 2G/3G/4G/5G

Algorithm:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if two of them).
3. Click Network Type (or Preferred Network Type)
4. Install 4G (preferably) or 5G/4G/3G/2G (auto).

If you have a Redmi Note 11 or older but 5G doesn’t catch it, check if your model supports this technology.

APN setting (access point)

Incorrect APN settings are one of the main reasons for slow internet, and operators often update them, but the phone doesn't always pull changes automatically.

How to set it up manually:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
2. Click Add (or select an existing profile).
3. Enter your operator’s parameters (see table below).
4. Save and restart the phone.

If the Internet is lost after the change of the APN, check if the APN is entered correctly (frequent error: unnecessary spaces).

Correct operator indicated |

The "APN" field is filled with no spaces |

Type of authentication - PAP|

Field "MMSC" empty (if not necessary) MMS)-->

3. Wi-Fi acceleration: frequency, channel and standard choice

If the problem is with Wi-Fi, not mobile internet, set the following settings:

Selection of frequency range (2.4 GHz vs 5 GHz)

Modern Xiaomi supports both bands, but by default connect to 2.4 GHz – it is more stable, but 3-5 times slower.

How to switch to 5 GHz:

1. Open the Settings. → Wi-Fi.
2. Click on the current network and select Forget.
3. Connect again – two networks with the same name (one with a 5G icon) will appear in the list.
4. Choose a 5G network (that’s 5GHz).

Minus 5 GHz: Less range. If you're far from the router, the speed can drop below 2.4 GHz.

3.2. Optimize DNS to speed up loading of sites

By default, MIUI uses your carrier's DNS, which often slows down page openings. Replace them with:

• 🌍 Cloudflare: 1.1.1.1 and 1.0.0.1
• 🌐 Google DNS: 8.8.8.8 and 8.8.4.4
• 🛡️ AdGuard (blocks ads): 94.140.14.14 and 94.140.15.15

How to change the DNS:

1. Go to Settings → Connections → Private DNS.
2. Select the hostname of the private DNS.
3. Enter dns.google (for Google) or 1dot1dot1dot1.cloudflare-dns.com (for Cloudflare).

💡

If some websites (e.g. banking sites) are no longer open after the DNS change, return the operator's settings. Some services block third-party DNS.

4. Hidden MIUI settings for maximum speed

Xiaomi hides a few important features that can speed up the Internet significantly, which are not in the standard settings, you need to use an engineering menu or USSD codes.

Inclusion of carrier aggregation (CA)

Carrier Aggregation (CA) technology allows the phone to use multiple 4G frequencies at once, increasing speeds to 300-500 Mbps.

How to turn on:

1. Open the Phone app.
2. Enter the code ##4636##
3. Go to the tab Information about the phone.
4. Scroll down to Set preferred network type.
5. Select LTE (recommended) or LTE only.
6. Go back and find Enable LTE CA and turn it on.

After turning on CA, check the speed in Speedtest – up to 200% gain with a good signal.

4.2. disabling background traffic restriction

MIUI by default limits internet speed for background applications (e.g. WhatsApp, Telegram, email) and saves battery but slows down the update.

How to remove the constraint:

1. Go to Settings → Applications → Application Management.
2. Select an app (such as Telegram).
3. Press Data Transfer.
4. Enable Background Data Transfer and Auto Start.

5. Hardware Limitations: What to Do When Nothing Helps

If you have tried all the settings, but the speed remains low, the problem may be:

• 📡 Communication module (on cheap Redmi models are weak chips that do not pull) 5G).
• 🔌 Antennae (damage after falling or getting moisture).
• 🔄 Firmware (old versions) MIUI artificially limit speed).

How to check:

1. Compare the speed on another phone to the same one SIM-If it's faster, your Xiaomi is a problem.
2. Check the module model: Enter the dialer: ##4636### Go to the Phone Information tab. See Set preferred network type and Network operator.
3. If the module supports only LTE Cat.4 (max. 150 Mbit / s), and the operator gives Cat.12 (600 Mbit / s), then an upgrade of the phone is inevitable.

⚠️ Note: Xiaomi with MediaTek processors (e.g. Redmi) 9A, POCO M3) A bug is often encountered when the phone “hangs” at a slow frequency. 4G. Solution - forced restart of the communication module: # #7263867## (not working on all models).

6. Alternative methods: VPN, proxy and optimizers

If standard methods don’t help, try:

6.1 Use of VPN to circumvent operator restrictions

Some operators (such as Tele2 or Iota) artificially slow down traffic for certain services (Torrent, YouTube, Netflix). VPN can get around it.

Recommended services:

• 🛡️ ProtonVPN (free, no logs, servers in Switzerland).
• ⚡ Warp from Cloudflare (built into 1.1.1.1 app, minimal speed losses).
• 🌍 NordVPN (paid, but with streaming optimized servers).

Importantly, a VPN doesn't speed up the Internet by itself -- it only bypasses artificial constraints. If the network is slow because of a bad signal, a VPN will make it even slower.

6.2. Optimizer applications (with caution!)

There are hundreds of apps on Google Play that promise to “speed the internet 10 times faster,” 90% of which are empty, but there are a few useful ones:

• 📊 Internet Speed Master – analyzes current settings and offers optimal.
• 🔍 NetOptimizer – Clears the cache DNS And resets the network settings.
• 🛠️ MIUI Hidden Settings – Opens up access to hidden features MIUI (including the communication module settings).

⚠️ Note: Do not install SEOs asking you to access Root or Accessibility Service.This can lead to data theft or phone lockdown.

7. Update firmware and reset network settings

If all previous methods have failed, radical measures remain:

Update MIUI to the latest version

Older versions of MIUI (below 12.5) often have bugs with the communication module.

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If a new version is available, download it and install it.

If the update doesn't come in:

• 🔄 Check the firmware region (should match your country).
• 📥 Download the firmware manually from the official website.

7.2. Complete reset of network settings

This will remove all stored Wi-Fi networks, passwords, and APN settings, but often solves problems with slow internet.

How to do this:

1. Open Settings → About the phone → Reset settings.
2. Select Network Resetting.
3. Confirm the action.
4. After restarting manually configure the APN (see section 2.2).

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Resetting the network settings is the last step before going to the service center, and in 60% of cases it solves problems with the “brakes” of the Internet that are not eliminated by other methods.

FAQ: Frequent questions about the speed of the Internet on Xiaomi