How to improve mobile Internet on Xiaomi Redmi: from settings to hardware

Why mobile internet on Redmi is slowing down and how to fix it

Did you notice that Xiaomi Redmi is slow to load pages, videos are constantly buffered, and messengers are loading messages with a delay? The problem is not always the operator - in 80% of cases, the settings of the smartphone, outdated software or hardware limitations are to blame. Even the flagship models of the Redmi K50 or Redmi Note 12 Pro+ can suffer from slow mobile Internet if you do not optimize key parameters.

In this article, we will discuss 7 Proven ways to improve speed 4G/5G Xiaomi Redmi, from basic settings to deep firmware changes, learn how to choose the right network type, circumvent operator restrictions, clean up system debris, and even physically amplify the signal. 7xx/8xx — They have hidden modem settings that Xiaomi disables by default.

Before you start, check the obvious: make sure you have an active rate with a 4G/5G (Not all carriers automatically connect subscribers to the new standards, and that you are in coverage.+ instead 4G or 5G, The problem is not with the smartphone.

1. Optimization of mobile network settings

The first thing you need to do is manually adjust your mobile connection settings. Xiaomi defaults to Auto mode, which is not always optimal. For example, in densely populated areas, a smartphone can constantly switch between 4G and 5G, leading to connection breakdowns.

How to change the type of network:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Go to Network Type.
4. Install 4G (LTE) or 5G/4G/3G/2G (auto) only if you have a modern fare.

For Redmi models with 5G support (such as the Redmi K60 or Note 12 Pro+ 5G), it is recommended to choose 5G/4G without 3G/2G - this will speed up network search. If 5G is unstable in your region, force LTE Only to be enabled.

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Some MIUI firmware has a hidden "Network Type" item, so to unlock it, type ##4636## in your phone dialer, select Phone Information, and manually install your preferred network type.

Also check if VoLTE is enabled (voice by voice) LTE). Without it, the smartphone will switch to 3G When you call, it slows down the Internet, and it activates in the same place, in the settings. SIM-map.

2. reset APN settings and update operator configuration

APN (Access Point Name is the "entry point" to the Internet provided by the operator. APN They're lost or outdated, they'll drop speeds. MIUI shift SIM-map.

How to reset APN:

• 📱 Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
• 🔄 Click on the three dots in the top right corner and select Reset to default values.
• 📲 If the reset doesn’t help, create a new one. APN manually (options can be found on your operator's website).

After reset, restart your smartphone. If the problem persists, update the operator configuration:

1. Open Settings → About the phone → Update MIUI.
2. Press three points. → Update the operator configuration.
3. Confirm the update and wait until it is completed.

If the Internet does not work after these actions, check if the MIUI firewall blocks it. Go to Settings → Applications → Permissions → Autorun and make sure that the browser and messengers have a permission for background work.

3. Cleaning the cache and data of system applications

Over time, MIUI system applications that are responsible for communication accumulate debris that inhibits signal processing, especially critical ones:

• 📶 Telephony services (com.android.phone)
• 🌐 Google Play Services (com.google.android.gms)
• 📱 Settings (com.android.settings)

How to clear the cache:

1. Open Settings → Applications → Application Management.
2. Press three points. → Show all applications.
3. Find the apps from the list above, open them and click Clear Cache and Clear Data (if there is a button).

Clear the cache of Telephony Services.

Clear the data of Google Play Services

Reboot your smartphone

Check the speed of the Internet-->

After cleaning, restart the device. If the speed hasn't increased, try turning off battery optimization for system applications:

1. Go to Settings → Battery and Performance → Battery Optimization.
2. Select All Apps and disable optimization for Telephony Services and Google Play Services.

4. Update of firmware and modem

Outdated firmware is one of the main reasons for poor Internet. Xiaomi regularly releases updates that improve the modem (chip responsible for communication). For example, in the Redmi Note 11 Pro+ after upgrading to MIUI 14, 5G speeds increased by 30% due to driver optimization.

How to update firmware:

1. Open Settings → About the phone → Update MIUI.
2. Click Check Updates and install the latest version.
3. If there are no updates, check manually at MIUI Downloads.

For advanced users, if the standard update didn't work, you can flash a separate modem file (for example, for the Snapdragon 870 in the Redmi K40).

• 🔗 Download the current modem file for your model (see forums). 4PDA or XDA Developers).
• 📁 Put it in a folder. downloaded_rom internal.
• 🔄 Go to Settings. → The phone. → Update MIUI, press three points → Select the update file.

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Modem firmware is a last resort, and if you do something wrong, your smartphone can lose all connection, and it's recommended only for advanced users.

After the modem firmware is installed, reset the network settings (Settings → System → Resetting → Network Settings Reset).

5.Analysis check and physical signal amplification

If the software methods didn't help, the problem could be hardware. For example, in Redmi 9A or Redmi 8A, the antennas are located at the bottom of the body — if you hold the smartphone in your hand, the signal weakens. In models with a metal case (Redmi K30 Pro), metal can shield the waves.

How to check the antenna:

• 📏 See the antenna layout for your model (usually marked on the back cover with two thin lines).
• 🖐️ Hold your smartphone so as not to close the antennas with your fingers.
• 🔋 Check if the battery is swelling - it can press on the antenna contacts.

To amplify the signal, you can use:

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Before buying a signal amplifier, check its compatibility with the frequencies of your operator. For example, MTS in Russia uses the 800/1800/2600 MHz bands for 4G.

If you suspect that the antenna is damaged (for example, after a fall), you can check its performance using the engineering menu:

1. Enter the code ##4636##.
2. Select Phone Information.
3. See Network Signal – if it is constantly at -110 dBm or below, the antenna may be faulty.

6. Disabling background processes and VPN

Many apps consume traffic in the background, even when you're not using them, like MIUI syncs data by default to Xiaomi servers, and Google Play Services updates apps, which not only consumes traffic, but also puts a strain on the modem.

How to limit background activity:

• 🚫 Go to Settings. → Annexes → Application management.
• 📉 For each application, turn off AutoRun and Background Activity (except messengers and browsers).
• 🔒 B Settings → Battery and productivity → Battery Optimization Enable Strict Optimization for Unnecessary Applications.

Also check if VPN is enabled. Many users forget that some apps (like AdGuard or 1.1.1.1) automatically connect a VPN, which can slow down the connection. Disable it in Settings → VPN.

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If you use Dual Apps, each clone consumes traffic separately.

Another hidden traffic eater is MIUI updates, to turn them off:

1. Go to Settings → About Phone → Update MIUI.
2. Press three points. → Update settings.
3. Turn off Automatic Booting via Mobile Data.

7. Alternative methods: from root rights to operator change

If none of these things work, there are still radical measures that require technical skills, but can give you a significant boost in speed.

Method 1: Rooting and modifying the build.prop file

This file stores system settings, including modem settings, for example, you can force carrier aggregation (CA) to be enabled, which increases the speed of 4G.

1. Get root rights (for example, through Magisk).
2. Open /system/build.prop in the editor (e.g. BuildProp Editor).
3. Add the lines: ro.telephony.default_network=22 persist.radio.modem.cap=8
4. Save and restart your smartphone.

Method 2: Changing the IMEI

Some carriers limit speeds for certain smartphone models by IMEI. If you suspect that your Redmi is on the blacklist, you can change the IMEI (legally if the smartphone is not on credit).

• 🔧 Use apps like Chamelephon (requires root).
• ⚠️ Attention: shift IMEI This can lead to a locking of the smartphone by the operator, and only do this if you are sure of the consequences.

Method 3: Change of operator

If all methods have been tried and the speed is still low, there may be a problem with the operator.

• 📡 MTS is the best coverage 4G/5G urban.
• 🌍 MegaFon - good for travel (roaming).
• 💰 Tele2 – Budget fares, but often limits speed.
• ⚡ Yota is unlimited. 4G, but a weak cover outside the city.

FAQ: Frequent questions about improving mobile internet on Redmi