How to increase the speed of the Internet on the Xiaomi phone: from settings to hardware chips

Slow internet on Xiaomi is a problem that every second user faces, and it is not always the fault of the operator: in 70% of cases, the speed drops due to incorrect settings of the smartphone, overloaded system or hardware limitations. This article is not about trivial tips like “reset your phone” – here we will analyze the deep settings. MIUI, Hidden features of Qualcomm and Mediatek modems, as well as hardware tricks that really work.

We tested all the methods on models from Redmi Note 10 Pro (Snapdragon 732G) Xiaomi 13 Ultra (Snapdragon 8 Gen 2) steerable MIUI 13/14. Results: With the right settings, speed 4G magnified 30-120% (s 20 before 45 Mbps in real tests, and delays in online games have been reduced with 80 before 40-50 Important: Some methods require unlocking the bootloader or root rights – we have noted them separately.

If you are tired of the eternal “buffering” on YouTube or lags in the Internet PUBG Mobile, read on. But first check the basics: signal strength (should be at least lower than that). -100 dBm), operator fare (possibly you have a speed limit) and network congestion in your area (use the NetMonster or CellMapper app).

1. Optimization of mobile network settings in MIUI

Xiaomi's standard mobile Internet settings often get lost after updates or resets. Even if you haven't changed anything, the system can automatically switch to less efficient settings, starting with basic adjustments that don't require technical knowledge.

The first thing you need to do is forcefully turn on 4G (LTE) smack-in 2G/3G/4G. For that:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Type of network.
2. Select Only. LTE (or 4G, if there is no such clause).
3. If you have VoLTE, turn it on (improving call quality without losing speed).

The second step is to turn off energy saving for the mobile network. MIUI It aggressively saves battery power by limiting background activity, which causes speed drawdowns:

• 🔋 Go to Settings. → Battery and productivity → Battery mode.
• 📶 Choose Performance or Balanced (but not Charge Savings).
• 🔄 In Battery Optimization, find apps that use the Internet (browser, instant messengers, games) and turn off optimization for them.

Third moment — APN-Incorrect access point parameters can slow down the speed of the 40-50%. Each operator has its own settings, but the overall scheme:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
2. Click on the current profile and check the parameters. For MTS, Beeline, Megaphone and Telephone2 Up-to-date settings can be found on official websites (updated once in a while). 1-2 year-end).
3. If you are not sure, drop it. APN to standard (reset to default values).

2. Hidden modem settings (Engineer Mode)

Xiaomi smartphones have a hidden engineering menu where you can manually adjust modem settings. This works on Qualcomm chipsets (Snapdragon) and partly on Mediatek (Dimensity/Helio). Incorrect settings can lead to network loss – be careful!

To get into Engineer Mode:

1. Open the Phone app.
2. Enter the combination: ##4636### (for Qualcomm) or #36446337## (for Mediatek).
3. Select Information (or Engineer Mode) → Engineer Mode (MTK) Mediatek).

In this menu, we are interested in two sections:

For Qualcomm (Snapdragon)

• 📡 Set preferred network type: select the LTE Only (unless previously used by standard settings).
• 🔄 LTE Band Selection: If you know what ranges 4G If you use your operator in the region, you can choose them manually. For example, for MTS in Moscow, it's Band 3, 7, 20.
• 📶 Signal Strength: you can see the actual signal strength (in dBm) and the adjacent towers. -110 dBm, the speed will fall.

For Mediatek (Dimensity/Helio)

• 📡 Network Select: Select LTE Only.
• 🔧 Band Lock: similar to Qualcomm, but the interface may be different. For Beeline in St. Petersburg, Band 3, 7, 38 are often used.
• 📊 Field Test: Shows detailed connection information, including RSRP (analogue 4G).

Important: After changes to Engineer Mode, restart your phone. If the speed does not improve or the signal is lost, reset your network settings (Settings) → SIM-map → Resetting mobile network settings).

3.Problems with SIM-card-and-slot

Quality. SIM-And the maps and the location of the maps on the phone have a direct impact on the speed of the Internet:

• 🆔 Slot SIM-cards: in two-sim Xiaomi first slot (usually) SIM 1) often has the best antenna for 4G. If you have two cards, place the main one in the first slot.
• 🔄 Type SIM: Older Mini-SIM or Micro-SIM cards may be worse contact. Replace with Nano-SIM (even if the adapter is working).
• 🛠️ Physical condition: scratched contacts or contamination on SIM-Wash the card with alcohol and check the contacts in the slot (they should be clean and smooth).

Another thing that's not quite clear is that you have VoLTE support, and if your carrier is providing this service, it's not activated:

1. Make sure that in the settings → SIM-map → [Yours. SIM] → VoLTE switch switch on.
2. If there is no option, update your firmware or contact the operator (it is possible that the service is not connected on your tariff).

On some models (Redmi Note 9 Pro, POCO X3) There's a bug: when VoLTE is active, the Internet speed drops, so if you do that, try turning off VoLTE and test the speed again.

4. Programmatic limitations: background activity and cache

MIUI aggressively restricts the background activity of applications, which leads to the "hang" of the Internet, for example, if you listen to music on Spotify and try to download a file at the same time, the speed can sag in the Internet. 2-3 To fix it:

Step 1: Turn off background traffic restriction:

1. Go to Settings → Applications → Application Management.
2. Select an app (such as Chrome or Telegram).
3. Press Data Limitation and turn off Background data.

Step 2: Clear the cache DNS. Contaminated cache can slow down the opening of websites:

• 📱 Open the Settings. → Annexes → Application management.
• 🔍 Find it. DNS-service DNS Over HTTPS newer MIUI).
• 🧹 Click Clear Cache and Clear Data.

Step 3: Check it out VPN And a proxy, even if you don't use it. VPN, Some applications (such as AdGuard or 1.1.1.1) can create virtual networks to disable them:

1. Go to Settings. → Connections and sharing → VPN.
2. Remove all saved configurations.
3. Check the Proxy section (if any) – it should be disabled.

💡

If after cleaning the cache DNS Websites open slowly, try manually DNS Google (8.8.8.8) or Cloudflare (1.1.1.1) customized Wi-Fi/mobile.

5. Hardware causes: antennas and metal housing

If software techniques didn't help, the problem could be in the hardware of Xiaomi's smartphones (especially metal-hulled models like the Xiaomi Mi 11 or Redmi). K40) They often suffer from poor signal reception due to:

• 📶 Screen antenna: metal blocks the signal. Hold the phone so that the upper part (where the antennas are located) is not closed by your hand.
• 🔌 Damaged contacts: After falling or getting moisture, the antenna tracks can move away.
• 🛠️ Faulty modem: If the phone doesn’t “catch” the network where other devices are working normally, the modem may have burned (a common problem after firmware is installed).

How to check for hardware problems:

1. Compare the signal strength (dBm) on your Xiaomi and another phone in one place. 15-20 dBm - Problem with the antenna.
2. Try inserting. SIM-If the speed is normal, it's your Xiaomi fault.
3. See if the phone is heating up in the upper part of the body (there are antennas), overheating may indicate a short circuit.

If you suspect a hardware malfunction, contact the service. The average cost of repairing the antenna is 1,500-3,000 ₽, modem replacement - 3000-6000 ₽.

💡

Xiaomi metal body can block up to 30% If you hold your phone in your hand, try changing your grip, which can increase your speed. 10-20 Mbit/s.

6.Alternative methods: from root to external antennas

If the standard methods don't work, then radical measures remain: they require technical knowledge, but they maximize speed.

Method 1: Change the modem configuration (requires root)

Using the application MTK Engineering Mode (for Mediatek) or QPST (for Qualcomm, it is possible:

• 🔧 Change. TTL-Reduced from 64 to 63 can bypass operator restrictions).
• 📶 Forced load-bearing aggregation (CA), if it's off.
• 🔄 Optimize parameters RRC-connection.

Example of a command for Qualcomm (executed through ADB):

adb shell settings put global captive_portal_detection_enabled 0

This command disables the check of the “prisoner portal” (public login pages), which can speed up the connection to the Internet.

Method 2: External antenna (for weak signal)

If you live in a low-coating area, you can connect an external antenna via an adapter. TS9 or CRC9. For that:

1. Buy an antenna with a connector SMA and an adapter for your Xiaomi model (for example, an adapter is suitable for the Redmi Note 8 Pro). CRC9).
2. Connect the antenna to the phone (you may have to disassemble the case).
3. Point the antenna toward the nearest tower (use NetMonster to determine the direction).

Speed increase: up to 50-100% signal-band -110...-120 dBm.

Method 3: Modem firmware

Forums 4PDA and XDA Developers are laying out modem firmware optimized for specific regions. For example, for the Redmi Note 10 Pro, there are firmware with improved support for the Band 20 (800 MHz), which is often used in Russia.

💡

Before running the modem, back up the current version via Fastboot or TWRP. The wrong firmware can completely shut down the network!

7. Speed testing: how to measure correctly

Many users misjudge the speed of the Internet by Speedtest or YouTube, and in fact, these tests are not always objective.

Important: Test the speed in different conditions:

• 🏠 Home (Wi-Fi vs Mobile Internet).
• 🚗 Outside (in motion and static).
• 🏢 In places with a large crowd of people (shopping center, stadiums).

If speedtest speed is high, but sites load slowly, the problem is that you are not fast. DNS Or the provider. Try changing. DNS either 1.1.1.1 or 8.8.8.8.

💡

If the speed in tests is high, but in games of laga – check jitter (ping variability) in nPerf. value above 20 ms is already critical for online games.

8. Frequent user errors

Many of us are to blame for the slow Internet.-5 Mistakes that kill speed on Xiaomi:

1. Use metal covers. Metal shields the signal. Remove the cover and check the speed.
2. Active Airplane Mode. Even if Wi-Fi and Bluetooth are on, the mobile network is off. → Connections → Airplane mode.
3. Installation of Internet accelerators from the Play Market, 99 percent of these applications are dummy or malware, and they don't speed up the network, they just load the system.
4. Ignoring updates MIUI. In newer versions, firmware often improves network support. Update through Settings → The phone. → Updating the system.
5. Use of the two SIM-Most of the cards are simultaneously. SIM run-in 2G, if the first use is 4G. Turn off the second. SIM, if not.

Another common problem is operator network congestion (18:00–23:00) speed may fall 30-50%. Decision:

• 📅 Use the Internet at off-peak hours (morning or night).
• 🔄 Switch to another operator (for example, if MTS is overloaded, try Tele2).
• 📡 Connect to Wi-Fi (if available).

FAQ: Answers to Frequent Questions