How to enable top network speed on Xiaomi: 4G, 5G and Internet Problem Solutions

Have you bought a new Xiaomi smartphone or POCO, but mobile Internet speed is poor? Or did the MIUI update lose the 4G+/5G icon in the status bar? This problem is familiar to many users - even flagship models like Xiaomi 14 Ultra or Redmi Note 13 Pro+ sometimes "forget" to switch to high-speed networks. In 90% of cases, it is not hardware limitations, but software settings that can be fixed in 5 minutes.

In this article, you will find 4 proven ways to enable the maximum network speed on Xiaomi – from basic MIUI settings to hidden parameters of the engineering menu. We will also discuss why a smartphone can artificially limit speed (spoiler: it is not always the operator’s fault!) and what to do if, even after all the manipulations, the Internet is slow. For convenience, the instructions are adapted to the latest versions of MIUI 14/15 and current models from 2023-2026.

Why Xiaomi can limit network speeds?

Before treating symptoms, it’s worth understanding the reason: Xiaomi smartphones (like other brands) limit mobile internet speed for several reasons:

• 🔄 Energy conservation: MIUI It activates the default traffic saving mode if the battery is below 20 percent, which reduces the background speed by 30 to 50 percent%.
• 📡 Non-optimal network settings: Many models are defaulted (Redmi) 12, POCO X5) choose 3G/4G (car, ignoring the 4G+ or 5G.
• 🔒 Operator lockdown: Some SIM-Cards (especially virtual operators like Tele2 or Yota) limit speeds to 10–50 Mbps even in the coverage area. 5G.
• 🛠️ Software bugs: After the update MIUI The modem configuration may be reset (e.g., Xiaomi) 13T post-transition MIUI 15 missing 5G).

Interesting fact: in 2023, users of POCO F5 massively complained about the “cutting” of 5G speeds to 100 Mbit / s. It turned out that the fault was a bug in the firmware, which Xiaomi fixed only in the update V14.0.6.0.TMWEUXM. Moral: sometimes the problem is not in your actions, but in the software itself.

⚠️ Note: If your Xiaomi supports 5G, But there's no setting, check the firmware version. On some models (e.g. Redmi Note 11 Pro).+ 5G) The option appears only after manual update of regional firmware.

Method 1: Basic MIUI settings (for beginners)

To start with, it's simple to check the standard network settings, which works on all Xiaomi, Redmi and POCO smartphones, regardless of the MIUI version.

Step 1. Open the Settings. → SIM-maps and mobile networks.

Step 2. Choose yours. SIM-card (if two of them).

Step 3: Go to Network Type (or Preferred Network Type) and select:

• 📶 For 4G: 4G (preferably LTE/4G/3G/2G (motor-car).
• 🚀 For 5G: 5G/4G/3G/2G (car) or Only 5G (if you're sure of coverage).
• ⚡ For maximum speed: Only 4G or 5G (Disables switching to slow networks).

Step 4: Activate the options:

• 🔗 Turn on 4G+ (or enhanced LTE) — It combines several channels to accelerate.
• 🔄 Automatic network selection – if disabled, the smartphone will not switch to a faster network.

The right type of network (4G/5G)

4G+ or Enhanced LTE mode activated

Traffic saving mode is disabled

Rebooted smartphone after changes-->

After the changes, be sure to restart the device - the modem settings apply only after the reboot.

💡

If the 5G Internet is gone after switching, return 5G/4G/3G/2G (auto) and 5G coverage is unstable in some regions, and the smartphone is hanging around in the search for the network.

Method 2: Engineering menu (for advanced)

If standard settings didn't help, it's time to dig deeper.The engineering menu (#4636###) lets you manually adjust modem settings, including network priorities and carrier aggregation (CA), a technique particularly effective for 5G-enabled models (Xiaomi 12/13/14 series, POCO F4/F5 GT), where operators often limit default speeds.

Step 1. Open the Phone app and enter the code:

##4636##

Some firmware (e.g. global MIUI for Redmi Note 12) may require code:

##2263##

Step 2. In the menu that opens, select Phone Information (or Phone Information).

Step 3. Scroll down to the Set preferred network type block.

Step 4: To activate carrier aggregation (increases speed by 30–100%), find the LTE CA Configuration parameter and select Enabled.

Step 5: Save the settings and restart the smartphone. Once turned on, check the speed through Speedtest.

⚠️ Note: Some of the options of the engineering menu may reset after the update MIUI. If the speed has dropped again, repeat the settings. Also avoid changing Band Selection settings - incorrect values can lead to loss of the network.

Method 3: USSD-codes

USSD-Codes are secret commands sent to the operator to force the network to switch modes, and they are especially useful if your Xiaomi is stuck on the network. 3G or does not want to connect to 5G.

Here are the working codes for the main Russian operators:

• 📶 MTS: ##4636## → Choose. LTE Only → Reboot. Alternative: *111*467# (check-up 4G).
• 🟠 Beeline: *110*181# — forced connection 4G. For 5G: *110*547#.
• 🔴 MegaFon: *105*467# — Checking the available networks. 4G+: *105*453#.
• 🟣 Tele2: 152# - Check the current network. To reset settings: ##72786##*.

How to use:

1. Open the Phone app.
2. Enter the code and press the call button.
3. Follow the instructions in response from the operator (confirmation is usually required).
4. Reboot your smartphone.

If nothing happens after entering the code, check:

• 🔌 Is it connected? SIM-map to network (not in "flight" mode»).
• 📱 Does your Xiaomi model support a specified network type (e.g. Redmi)? 9A supportive 5G).
• 🔄 Does the operator block forced switching (relevant for corporate tariffs).

Method 4: Reset your network settings (if nothing helps)

If all previous methods failed, the last chance is to reset the network settings to factory ones, which will remove all stored Wi-Fi networks, passwords and mobile Internet settings, but often solves problems with “hanging” on slow networks.

Instructions:

1. Go to Settings. → SIM-maps and mobile networks → Additionally. → Resetting network settings.
2. Confirm the action (a password or pattern lock may be required).
3. After reset, do not restore settings from the backup – this can bring back old bugs.
4. Manually configure the connection to the mobile network (see Method 1).

If the reset didn't help, check:

• 🔧 Updates MIUI: Go to Settings. → The phone. → Update the system and install the latest firmware.
• 📋 IMEI: Make sure that IMEI Your smartphone has not reset (checked by *#06#). IMEI zeros are displayed, restoration is required.
• 🛠️ Hardware malfunctions: If after all the manipulations the network does not catch at all, there may be a problem with the antenna module (relevant for Xiaomi, who have been in repair).

⚠️ Note: On some models (POCO X3 Pro, Redmi Note 10 Pro) after resetting the network disappears option 5G. In this case, only manual firmware through Fastboot or contacting the service center will help.

💡

Network reset is a last resort. Before you do that, try updating your firmware and checking. SIM-map.

Additional Tips for Maximum Speed

Even after setting up the network correctly, the speed may be lower than expected. Here are some life hacks to speed up:

• 🔋 Turn off battery saving mode: Go to Settings → Battery → Battery saving mode and deactivate it.Energy saving limits background traffic.
• 📱 Use it. SIM-card in slot 1: On most Xiaomi, the first slot supports higher speeds (up to the top of the top). 2x The difference is in the Redmi Note 12 Pro+).
• 🔄 Turn on Dual. SIM 4G: In the settings SIM-Activate the cards Use the cards 4G both SIM (If both cards support VoLTE).
• 🛡️ Turn it off. VPN: Many VPN-Services (including built-in services) MIUI) limit speed to 50–100 Mbit/s.
• 📡 Check the coverage: Install the NetMonster or CellMapper app to see the real coverage 4G/5G your neighborhood.

For owners of flagships (Xiaomi 13 Ultra, POCO F5 Pro) there is another trick: activate modem mode via ADB.

adb shell settings put global preferred_network_mode 14


adb shell settings put global mobile_data_always_on 1

After completing the commands, restart the device.

Frequent Mistakes and How to Avoid Them

When setting up a network on Xiaomi, users often make the same mistakes.

Another common problem is grey imports: Many Xiaomis bought on AliExpress or in unofficial stores have firmware in China, where 4G/5G standards differ from Russia’s, and as a result, the smartphone may not see some of the Band 7 (2600 MHz) or Band 20 (800 MHz) frequencies that our carriers use, so the solution is to flash it to a global version of MIUI.

FAQ: Answers to popular questions