How to increase the Internet bandwidth on Xiaomi phone: from basic settings to hidden chips MIUI

The slow internet on Xiaomi annoys even patient users: video slows down, games lag, and pages load for eternity. The reasons can be dozens of – from banal network congestion to hidden restrictions in the MIUI firmware. But the good news is that in 80% of cases, speed can be increased without buying a new tariff or router.

This article is not about obvious tips like "restart your phone" or "get closer to the router." We'll look at the system settings that the manufacturer does not advertise, as well as the technical nuances from the choice of the device. DNS to optimize the operation of modems Qualcomm and Mediatek. 5G (Yes, even on flagships like Xiaomi 13 Ultra they are) and “pitfalls” of saving traffic in the market. MIUI.

Important: all methods are tested on current versions of firmware (up to MIUI 14 inclusive) and work on both the budget Redmi Note 12 and the top Xiaomi 14 Pro. If your model is older than 2019, some points may be absent - we will warn you about this in advance.

1.Diagnostics of the current speed: what is slowing down your Xiaomi

Before you set up anything, you need to know where the bottleneck is. Xiaomi has diagnostic tools built in, but they're hidden from the user. Here's how to run them:

Open the phone application and enter the combination:

##4636##

From the Phone Information menu, select Network Statistics.

• 📶 Signal level in dBm (optimum: from -70 before -90; below -100 — critical-zone)
• 🔄 Type of network (LTE, 5G NR, HSPA+) and aggregation regime (e.g, CA_40M — The bigger the number, the better)
• ⚡ Real-time download/return speed (compare with tariff)

If you see Roaming: ON in the Service Information section, but you are not abroad, this is a MIUI bug that causes speeds to drop by 30-50%.

⚠️ Note: On some models (Redmi) 9A, Poco M3) The service menu may not open, but instead, it's an alternative -- apps like NetMonster or Network Cell Info from Google Play.

2. Optimizing the mobile Internet (4G/5G)

Even if you have unlimited rates, Xiaomi defaults to limit speed through hidden savings settings. Here's how to turn them off:

Go to Settings. → SIM-maps and mobile networks → [yours SIM] → Type of network:

• 🔄 Select Only. 4G (preferably 5G (Auto mode often leads to a slow switch. 3G.
• 📡 On models with Mediatek (for example, Redmi Note) 11) activate Volte (VoLTE) – this increases the speed of the 15-20% Optimizing voice and data.
• 🚫 Turn off Background Limitation in the same menu – it blocks app updates when the screen is locked.

For Xiaomi owners, Qualcomm Snapdragon (e.g. Poco F4, Xiaomi 12T) has a hidden carrier aggregation setting activated via the engineering menu:

Enter the phone in the appendix:

##2263##

Select Band Selection and turn on all available bands (especially B7, B20, B38 for Russia) and allow the phone to use multiple frequencies at once, increasing speeds up to 2-3 times.

Selected mode "Only 4G/5G" |

Activated by VoLTE (if supported)|

Background traffic restriction disabled |

Carrier aggregation enabled (for Snapdragon)-->

3. Wi-Fi setup: Hidden MIUI settings

Xiaomi artificially limits Wi-Fi speeds on some models to save energy.

Go to Settings → Wi-Fi → Additional settings and:

• 🔄 Enable High Performance Mode (available on flagships with MIUI 13+).
• 📡 Set Wi-Fi at 5 GHz (if the router supports). At 2.4 GHz, the speed is always lower due to congestion.
• 🔒 Disable Auto-connection to open networks – this prevents you from connecting to slow public points.
• 🔄 Activate Wi-Fi Direct only when needed – it consumes background resources.

Critical setting for older models (until 2021): in Settings → About Phone → MIUI version tap 7 times on the label Core. The menu will open where you need to turn on Force Wi-Fi Scan Throttle Disable. This eliminates delays when reconnecting to the network.

If the speed on Wi-Fi is still low, check the width of the channel on the router.

• 2.4 GHz: 20/40 MHz
• 5 GHz: 80 MHz (or 160 MHz if the router supports Wi-Fi 6)

💡

If your Xiaomi does not see a 5 GHz network, upgrade the router firmware. For example, Xiaomi Router 4A needs a software version at least 2.28.15.

4.DNS change: why does it increase speed by 30%

Xiaomi is using the default DNS-Replacing with alternative servers speeds up site loading and reduces ping in games.

How to change DNS to Xiaomi:

1. Go to Settings → Connections and Sharing → Private DNS.
2. Select the hostname of a private DNS and type: dns.google or for Russia: dot-russia.flatstack.net
3. Save and restart the phone.

To test the speed of DNS, use the DNS Benchmark app. Here are the results of the tests on the Xiaomi 12 Pro:

5.Cache cleanup and network settings reset

Over time, MIUI accumulates debris in network logs, which leads to "dumbing" speed, cleaning helps in 60% of cases.

First, remove the cache of system applications:

1. Go to Settings → Applications → Application Management.
2. Find Google Play Services, Telephony Services and Settings.
3. In each, press Warehouse. → Clear the cache.

If this doesn’t work, reset your network settings (all saved Wi-Fi and passwords will be erased!):

1. Settings → About phone → Resetting → Resetting Wi-Fi, mobile network and Bluetooth settings.
2. Confirm the action and wait for the reboot.

⚠️ Attention: On Xiaomi with MIUI 12 or below, a reset may cause Volte to disappear in the settings. To return it, type in the phone keyboard after the reset: ##86583## and activate VoLTE Provisioning.

6.Switching off background traffic and optimizing MIUI

MIUI is aggressively consuming traffic in the background -- even when you're not using your phone. Here's how to fix it:

Go to Settings → Battery and Performance → Battery Consumption Management and:

• 🔄 Select Performance Mode (instead of Balanced or Charge Saving).
• 📵 Turn off optimization. MIUI for critical applications (for example, messengers).
• 🔒 In the AutoRun section, turn off background activity for unnecessary apps (especially games and social media).

To control your traffic, install NetGuard (no root required) and this app will show you which programs are eating the Internet in the background and will block their access to the network.

On models with MIUI 14, Intelligent Network Distribution (Settings → Connections → Intelligent Distribution) has been introduced, and it needs to be turned off, and it automatically switches applications between Wi-Fi and the mobile network, which leads to delays.

💡

On Xiaomi with a Mediatek processor (such as the Redmi Note 11 Pro), background traffic can consume up to 30% of the speed, disabling autorun of unnecessary applications gives an increase of up to 40-50 Mbps.

7.The 5G problem: why Xiaomi isn't using full speed

Even on flagships like the Xiaomi 13 Pro, the real speed of 5G is often 2-3 times lower than the stated speed.

• 📡 Lack of aggregation 5G+4G (technology EN-DC). On most Xiaomi, it is disabled by default.
• 🔄 Incorrect operator profile (e.g., MTS may issue a profile for the 4G instead 5G).
• 📱 Firmware limitations - in MIUI Russia artificially reduces speed 5G due to regulatory requirements.

How to turn on EN-DC (5G+4G aggregation):

1. Install Activity Launcher from Google Play.
2. Find EngineeringMode (or MTK Engineer Mode for Mediatek) here.
3. Go to Band Selection → NR5G Band → Enable EN-DC.
4. Select the combination n78 + B7 (for Russia) or n41 + B40 (for other regions).

To update the operator profile, enter:

##869434##

And you can pick Update. After you reboot, check the speed, and you can get up to 200-300 Mbps.

⚠️ Attention: Xiaomi with Snapdragon 8 Gen 1/2 (for example, Xiaomi 12S Ultra after inclusion EN-DC It can increase the heat of the processor. AIDA64 — if it exceeds 50°C, turn off aggregation.

8.Alternative methods: from firmware to hardware tricks

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

• 🔄 Firmware change: Install MIUI EU (European version) or xiaomi.eu - they do not have artificial speed limits for Russia: xiaomi.eu/community.
• 📡 External antenna: For models with connector USB-C (for example, Poco F4 GT) can be connected to the antenna 4G/5G It's an adapter: +10-15 dB.
• 🔧 Modem firmware replacement: Xiaomi with Qualcomm can flash an alternative modem (e.g. from OnePlus). +20-30% speed.

For the most desperate, you can overclock the modem through the engineering menu. On the Snapdragon 888/8 Gen 1, type:

##36446337##

And in Modem Settings, increase the LTE RRC Timer to 600 (300 by default), which reduces the delays when switching between cells.

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