How to amplify the Internet signal on Xiaomi phone: from simple settings to hidden MIUI features

Have you noticed that your Xiaomi suddenly lost the Internet? Pages load forever, videos are constantly buffered, and messengers are updated only after rebooting? The problem of weak Wi-Fi signal or mobile network is familiar to many owners of smartphones of the brand, from the budget Redmi Note to the flagship Mi 13 Ultra. The reasons can lie in hardware limitations (for example, a weak receiver in older models), and in software failures of MIUI, which block the background data transfer.

In this article, we will discuss 10 proven ways to amplify the Internet signal on Xiaomi, from basic settings to little-known “chips” of firmware.

• 🔍 Diagnose the source of the problem (Wi-Fi, 4G/5G or)
• ⚡ Optimize settings MIUI maximum speed
• 📡 Use hidden engineering menus to fine-tune the communication module
• 🛠️ Remove hardware interference without disassembling the phone

Important: The methods are suitable for all MIUI 12-14 devices (including POCO, Black Shark, and Redmi), but some items may require unlocking the bootloader or root rights – we will note them separately.

1. Checking the current state of the network: diagnosis before treatment

Before you try signal boosters, you need to pinpoint where the problem is occurring. Xiaomi has built-in diagnostic tools — they are often neglected, even though they save hours of time.

Open Settings → Network and Internet → Network status. Here you can see:

• 📶 Signal level (in dBm, the closer to the -50, better; -100 And below, critically weak)
• 🔄 Download/Return speed (compare with your operator’s fare)
• 📡 Type of connection (e.g, LTE Band 3 or Wi-Fi 5 GHz)

If you see the value of the mobile network signal below -90 dBm or Wi-Fi speeds are not higher than 10 Mbps at tariff 100+ Mbps, the problem needs to be addressed. 4G and 3G — This is a sign of unstable operator coverage.

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In the Xiaomi engineering menu (code ##4636##) there is a Network Information tab that displays the exact signal level in real time, which is useful for checking the effectiveness after using each method in the article.

2. Optimize MIUI settings for maximum speed

MIUI by default restricts background data transmission and prioritizes system applications, which saves battery power, but often leads to the Internet hanging.

1. Turn off background traffic restriction: Go to Settings → Annexes → Application management → Three points (⋮) → Special access → Background Limitation: Make sure that critical applications (messengers, browsers) have a status No restrictions.
2. Enable High Speed Mode for Mobile Data: In Settings → SIM-maps and mobile networks → Your name. SIM → Type of network Select Only LTE (even if you 5G-This will prevent automatic switching to slow networks. 3G/2G.
3. Reset network settings: Sometimes crashes occur due to configuration conflict. Back up Wi-Fi hotspots (write down passwords!) and reset: Settings → Network & Internet → Additional → Reset your Wi-Fi, mobile network and Bluetooth settings.

After this manipulation, restart the phone. If the speed has not increased, the problem lies deeper — for example, incorrect settings of APN (operator access points) or hardware limitations of the communication module.

3. Wi-Fi setup: How to get Xiaomi to "catch" the network better

If the problem is only Wi-Fi and mobile Internet is stable, check these options:

If your Xiaomi stubbornly doesn’t connect to 5 GHz despite its support for this range (check out the model specs), try:

• 🔄 Rename the 5 GHz network in the router (e.g. add a new network _5G name)
• 📵 Temporarily disable Quick Wi-Fi switching in settings MIUI (sometimes it fails)
• 🔧 Update the router firmware (especially relevant for Xiaomi Mi Router devices)

⚠️ Note: Some Redmi models (e.g. Redmi) 9A) Wi-Fi 5 GHz is unstable due to hardware savings, in which case only a replacement phone or external use will help. USB-adapter (required) OTG root).

4. Engineering menu: hidden settings for advanced users

MIUI hides a number of parameters that can only be changed through the Engineering Menu (or Service Mode), settings that allow you to manually prioritize networks, turn off power saving for the communications module, and even “overclock” LTE speeds.

To open the menu:

1. Enter the phone code in the app: ##4636##
2. Select Phone Information (or Phone Information)
3. Scroll down to the Set Preferred Network Type block

Options are available here:

• 📶 LTE only - compulsory regime 4G (This is especially useful if the phone is constantly switching to 3G)
• 🔋 Disable battery optimizations for modem – disables energy savings for the communication module (can reduce battery life)
• 🔄 Band selection – manual selection of frequencies LTE (Like Band. 3/7/20 for Russia)

For models with Qualcomm Snapdragon (for example, POCO X3 Pro) is available additional menu code ##2263## - it shows detailed information about the communication module, including the temperature of the chip (overheating can cause speed drawdowns).

Record the current settings (take a screen picture)

Make sure the battery is charged >50%

Have a backup copy of the data

Understand that incorrect changes can lead to loss of network

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5 Hardware Solutions: When Software Methods Don't Help

If all of the above fails, the problem may be physical interference or antenna defects, and this is what you can do without disassembling your phone.

• 📱 Check the integrity of antenna lines: on Xiaomi, they are often located on the sides of the case. If the phone fell, contacts could be damaged. Carefully press the top and bottom of the back panel - if the signal improves, this is a sign of a break.
• 🛡️ Use a case without metal elements: even a small metal insert can shield the signal.
• 📡 Signal amplifier or repeater: If the problem is only at home, install a Wi-Fi repeater (e.g., Xiaomi Mi Wi-Fi Repeater 2) or LTE-It's cheaper than repairing your phone.

For Xiaomi owners with a 3.5 mm connector (such as the Redmi Note 10 Pro), there is an unusual solution: an extension antenna connected via an adapter. Such devices (such as the TP-Link TL-ANT2406A) amplify the Wi-Fi signal by 3-5 dBm, but require root for proper operation on Android.

⚠️ Note: If after the fall of the phone signal is completely lost (even near the router), do not try to disassemble the device yourself - in Xiaomi antenna soldered to the motherboard. ₽ (model-wise).

6. Alternative methods: from firmware to radical measures

If the standard methods don't work, then there are some hard solutions, which take longer and sometimes are risky, but can bring back a stable Internet.

• 🔄 Flashing to custom firmware (for example, LineageOS or Pixel Experience). Some Xiaomi models (for example, Redmi Note 8 Pro) stock MIUI speed-strapped LTE Because of the regional settings, the firmware removes these restrictions.
• 📦 Replacement of the communication module: relevant for older models (e.g. Redmi) 4X), And it's a soldered unit that degrades over time, and it costs about 800 parts. ₽, work from 1,500 ₽.
• 🔧 Use of external USB-network card: via OTG-adapter can be connected USB Wi-Fi/4G modem (e.g. TP-Link) TL-WN725N). Root and support required USB Ethernet in the Android core.

Before you resort to these methods, consider the cost-benefit ratio. For example, replacing a communications module with a Redmi 5 could cost half the price of a new phone.

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If your Xiaomi is older than 2018 and even after all the manipulations, the signal remains weak, most likely the problem is hardware wear, in which case it is more rational to consider buying a new smartphone with support for modern standards (for example, Redmi Note 12 with 5G and Wi-Fi 6).

FAQ: Frequent questions about the Internet signal on Xiaomi