How to speed up mobile Internet on Xiaomi: from simple settings to hidden MIUI chips

Have you noticed that mobile internet on your Xiaomi is slower than on other devices? Pages load forever, videos are constantly buffered, and messengers send messages with a delay? The problem is not always the tariff or coverage of the operator - in 80% of cases, you can increase the speed yourself by changing just a few parameters.

In this article, we will discuss 12 working methods of accelerating mobile Internet on Xiaomi, Redmi and smartphones POCO — From basic settings to hidden firmware functions MIUI. You will learn how to choose the right type of network, optimize the work. SIM-All of these are maps, bypass operator limitations, and even physically improve signal reception. 10 Pro to Xiaomi 14 Ultra and working on MIUI 14/15.

Importantly, the speed of the Internet depends on three key factors: device settings, operator network parameters, and external conditions (weather, tower load), and we start with the simplest solutions and gradually move to advanced techniques that even service center engineers use.

1. Checking the current speed and diagnosing problems

Before you change anything, you need to know what speed you're at right now and what's limiting it.

• 📱 Install the Speedtest by Ookla app or nPerf from Google Play. They show not only speed, but also ping, jitter (latency variability) and connection type (4G/5G).
• 📡 Run the test in different places: at home, on the street, in the office. If the speed is low everywhere, the problem is in the settings of the phone.
• 📊 Compare the results with the rate: if you have 5G, And the test shows 3G, Smartphones do not use the maximum network capabilities.

Critical indicators that should be noted:

If the Speedtest is below 5 Mbps with a full 4G signal, your smartphone is running in a power-saving mode that artificially limits the network.

⚠️ Note: Do not conduct speed tests through the VPN Or proxies, which distort the results, and avoid rush-hour tests (18:00-22:00) when the operator's network is overloaded.

2. Optimization of mobile network settings

By default, MIUI selects the network settings automatically, but this mode is not always optimal.

Open the Settings. → SIM-maps and mobile networks → [Yours. SIM] → Network type and:

• 🔄 If you 4G-Smartphone, select Only LTE (switch off 3G/2G).
• 🚀 If you 5G-smartphone, choose 5G/4G/3G/2G (car) or Only 5G (if the coating is stable).
• 📶 Turn off Automatic Network Selection and manually select the operator (sometimes the phone clings to a weak tower).

Additional settings:

• 🔋 Enable Advanced Mode LTE (If it is on the menu, it uses frequency aggregation to increase speed.
• 🌐 B Settings → Connections → Mobile network → Access points (APN) check that APN It corresponds to your operator. For MTS it is Internet.mts.ru, for Beeline - Internet.beeline.ru.

Select the LTE network type (for 4G) or 5G/4G (for 5G)

Disable the automatic operator selection

Check the correctness of the APN

Enable "Improved LTE Mode" (if available)

Reboot your phone after the changes-->

On the POCO F5 and Xiaomi 13T models, there is a hidden Network Mode option that allows you to force activation of LTE CA (Carrier Aggregation) to enable it:

1. Enter the dialer ##4636##.
2. Go to the phone information.
3. In the Set preferred network type section, select LTE only or NR/LTE (for 5G).

⚠️ Note: Compulsory regime only 5G It can cause you to lose communication in areas with unstable coverage. If calls start to break, return the settings to the Auto.

3. Disconnection of energy-saving modes

MIUI aggressively optimizes background processes to save battery life, and unfortunately, this often affects Internet speed.

Go to Settings → Battery and Performance → Battery Modes and:

• ⚡ Select Performance Mode (maximum speed but fast discharge).
• 🔄 If you want a balanced option, choose Balanced, but disable Background Limitation for browser and instant messengers.
• 🚫 Make sure that the adaptive battery and optimization MIUI Disabled – they block the network activity of applications.

For individual applications (e.g. YouTube or Telegram):

1. Go to Settings → Applications → Application Management.
2. Select the desired application → Battery → No restrictions.
3. Turn on Auto Start and Background Activity.

💡

If after power saving switch off the phone began to discharge quickly, turn on the "Battery Saving" mode only for the night through the schedule in the battery settings.

On models with MIUI 14+, there is a hidden feature called Ultra Battery Saver that can block mobile data to turn it off:

Settings → Special features → Functions for developers → Disable “Background Limitation for Energy Saving”

4. Hardware methods of signal enhancement

If the problem isn’t with settings, but with a weak signal, try these physical ways:

• 📶 Positioning antennas: In Xiaomi smartphones, antennas are located in the upper and lower parts of the case. Hold the phone so that the upper part is pointed towards the window or street.
• 🔌 Disconnect cases: Metal or thick cases shield the signal. remove the case and check speed.
• 🏠 Moving in the room: Walls, mirrors and appliances weaken the signal. Find the maximum level (usually by the window).
• 🔄 Reset Network Settings: Go to Settings → System system → Resetting settings → Reset network settings. This will delete stored Wi-Fi and mobile network settings.

For users of Xiaomi 12/13/14 series with support for 4×4 MIMO (technology for doubling the speed):

• Make sure that SIM-The card is inserted into slot 1 - it supports MIMO, Slot 2 is often limited.
• In the engineering menu (#4636##) check that the Serving Cell Info section displays MIMO: 4x4.

If the signal is consistently weak, consider buying a cellular repeater (repiter) or switch to the operator with the best coverage in your region. For example, in Moscow, Tele2 often performs best in the subway, and MTS on the outskirts.

5. Update of firmware and modems

Manufacturers regularly release updates that improve modem performance, and this is especially important at Xiaomi, as MIUI often optimizes network drivers for specific regions.

How to update firmware:

1. Go to Settings → About the phone → System update.
2. Click Check Updates and install the latest version of MIUI.
3. If the update doesn’t come, download it manually from the Xiaomi Firmware website (select a stable version for your model).

For advanced users: sometimes it helps to firmware modems from newer versions of MIUI. For example, modems from MIUI 15 can be installed on MIUI 14 via Fastboot.

After the update, reset the network settings (Settings → System → Settings Reset → Network Reset) and restart the device.

⚠️ Warning: Don’t install custom firmware (like LineageOS) for network enhancement – they often break modems on Xiaomi. Use only official versions. MIUI.

6.Use of VPN and alternative DNS

Sometimes operators artificially limit the speed of certain services (for example, YouTube or Torrent), bypassing this with a VPN or a change in DNS.

VPN for acceleration:

• 🔒 Install Warp from Cloudflare (free) or 1.1.1.1. They not only encrypt traffic, but also optimize routing.
• 📈 In the settings VPN Select a server in your region (for example, Moscow for Russia).
• ⚡ Run Speedtest before and after connection – if speed has increased, the operator really slows down traffic.

DNS change:

1. Go to Settings → Connections → Private DNS.
2. Select the DNS provider hostname and type: For Cloudflare: 1dot1dot1dot1.cloudflare-dns.com For Google: dns.google For AdGuard (blocks ads): dns.adguard.com

Save and restart the phone.

If after changing the DNS, some sites stopped opening, return the settings to Auto - it is possible that your operator blocks alternative DNS.

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VPNs and alternative DNSs only work if the operator is slowing down specific services, and if the problem is weak signal, these methods will not work.

7. Reset to factory settings (last resort)

If nothing works, the last thing you can do is reset it completely, and it will delete all the data, but it will bring the network settings back out of the box.

How to do the reset correctly:

1. Save all important data (photos, contacts, messages) to Mi Cloud or your computer.
2. Go to Settings → About Phone → Resetting → Delete all data.
3. Choose to Erase Everything and wait until it is completed (it will take 5-10 minutes).
4. After the reboot, do not restore data from the backup – first check the Internet speed of the “clean” phone.

Solution: Turn off energy saving and force activate LTE CA (see Section 4).