What to do if Xiaomi sometimes loses the Internet: full instructions

The problem of the periodic disappearance of the Internet on Xiaomi smartphones (including the Redmi, Poco and Mi series) is one of the most common complaints of users. Symptoms can manifest themselves in various ways, from short-term Wi-Fi hang-ups to a complete shutdown of the mobile network for a few minutes. In 80% of cases, software failures or incorrect settings are to blame, but how to accurately determine the cause and fix it without going to the service center?

In this article, we will analyze all possible scenarios - from the banal overheating of the processor to hidden bugs in the firmware. MIUI, You'll learn how to check for any of these things that can affect the stability of the connection. DNS-servers, why IPv6 Sometimes it conflicts with routers, and what to do if the problem only occurs in certain applications (for example, YouTube or Telegram.

Important: If the Internet is only lost when you connect to a particular router (for example, at home), and everything is stable on the mobile network or other access points, the problem is most likely the settings of the router, not the phone, and more about this in the section on diagnostics.

1. Diagnostics of the problem: how to understand what is the problem

Before you start setting up, you need to determine exactly the nature of the failure, and here are the key questions that will help narrow down the possible causes:

• 📶 Connection type: only Wi-Fi problem, only mobile internet problem (4G/5G) or both?
• 🏠 Location: Is the Internet disappearing in one place (for example, at home) or anywhere?
• ⏱ Frequency: failures occur at regular intervals (e.g., every 10 minutes) or randomly?
• 🔄 Actions: The problem arises when running specific applications (such as online games) or in the background?
• 🔋 Battery charge: Failures are more common at low charge levels (below 20%)?

If the Internet is only lost on Wi-Fi, but the mobile network is stable, check the router first. To do this, connect another phone or laptop to the same network. If they also have a failure, the problem is in the router or provider. If only your Xiaomi loses connection, the phone settings are to blame.

For deep diagnostics, use the built-in MIUI tools:

1. Open Settings → About Phone → MIUI version and press 5 times on the “Kerole” item (the developer menu will open).
2. Return to Settings → Additional → For developers and turn on the Wi-Fi Log.
3. After another failure, check the logs in Settings → Connections and Sharing → Wi-Fi → Log.

2. Wi-Fi problems: from simple settings to hidden bugs

If the Internet is lost on Wi-Fi, start with basic checks:

Reboot your phone and router|Check if the “Airplane” mode is on»|Make sure Wi-Fi doesn’t turn off in your energy saving settings|Try to connect to another network (e.g., a mobile access point)-->

Router firmware updates are a common cause of failures. Outdated router software can conflict with newer versions of MIUI, especially on Xiaomi models with Wi-Fi 6 support (for example, Redmi Note 12 Pro+ or Xiaomi 13T). Check the relevance of the firmware in the router web interface (usually at 192.168.1.1 or 192.168.0.1).

Another common problem is channel conflict: Many routers default on channel 6 (2.4 GHz), which is often overloaded. Try manually setting channel 1 or 11 in router settings. For 5 GHz, choose channels 36-48 or 149-165 (they are less busy).

⚠️ Note: Some Xiaomi models (e.g. Poco) X5 Pro) has an automatic change bug MAC-Addresses when you connect to Wi-Fi. This can cause frequent connection breaks. To turn off this feature, go to Settings. → Connections → Wi-Fi → Additionally. → Private. MAC-Address and select "Use" MAC-address».

If nothing helps, try resetting your phone’s network settings:

1. Open Settings → System and device → Resetting settings.
2. Select “Reset Wi-Fi, Mobile Network and Bluetooth settings”.
3. Confirm the action and restart the phone.

3.Mobile Internet: Why 4G/5G is "falling apart"

If the problem is only mobile, check:

• 📡 Coverage area: You may be at the edge of the tower range. Use the NetMonster or CellMapper app to check signal strength.
• 🔄 Network mode: c Settings → SIM-maps and mobile networks → Try to manually select the network mode. 4G (LTE) supplant.
• 📱 APN-settings: incorrect access point parameters can cause failures.Clarify the current settings with your operator (for example, for MTS this is Internet.mts.ru, for Beeline - Internet.beeline.ru).

Some Xiaomi models (like the Redmi Note 11 Pro or Poco F4) have a bug that switches between 4G and 5G. If you have 5G enabled but the coverage is unstable, the phone can constantly “jump” between networks, leading to cliffs.

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map and disable the option Enable 5G.
3. Reboot the phone.

If mobile internet is only lost in certain applications (e.g. VK or TikTok), the problem may be to limit background traffic.

1. Settings → Applications → Application management.
2. Select the problem application → Mobile data.
3. Make sure the options “Allow background traffic” and “Allow data transfer” are enabled.

💡

If mobile internet is running very slowly, try turning off VoLTE (voice on the Internet). LTE) customized SIM-On some Xiaomi models, this feature conflicts with data transfer.

4.Energy saving and background optimization: the hidden culprits

Aggressive power optimization in MIUI often causes Internet disruptions, can force Wi-Fi or mobile data to be turned off in the background to save battery power, especially on low-end models (Redmi 10A, Poco M5), where weak processors are located.

To turn off this feature:

1. Go to Settings → Battery and Performance → Battery Consumption Management.
2. Select No Limits mode (if not, turn on High Performance).
3. Open Settings → Applications → Application Management → Three Points (menu) → Special Access → Battery Optimization.
4. Find the Wi-Fi system application (or Mobile Data) and select Unlimited.

Another pitfall is the automatic shutdown of the Internet when you lock the screen, which is a feature in MIUI 13/14 and is on by default.

1. Settings → Connections and Sharing → Wi-Fi.
2. Click on the three dots in the upper right corner and select Additional.
3. Turn off the option to turn off Wi-Fi when you lock.

⚠️ Note: On Xiaomi models with MediaTek processors (e.g. Redmi Note 12 or Poco) X5) There is a bug in which a phone can lose its Wi-Fi connection after 30 to 60 minutes of inactivity, even if battery optimization is disabled, the solution is to install alternative software (such as Pixel Experience) or roll back to an older version. MIUI.

5. Firmware conflicts and software bugs

If the problem occurs after the update MIUI, There's a good chance that a software bug is to blame. MIUI 14.0.4 for Xiaomi 12T was a bug with DNS-This is a slug that causes the phone to lose its Internet connection every 15 to 20 minutes:

• 🔄 Recoil on the previous firmware version (if backup is available).
• 📥 Manual patch installation (if Xiaomi has released a fix).
• 🧹 Cleaning the cache of the system (in Settings) → Warehouse → Cleanup).

To check if the DNS malfunction is related, try manually prescribing alternative servers:

1. Open Settings → Connections and Sharing → Private DNS.
2. Select “Private DNS Host Name” and type in: dns.google or 1dot1dot1dot1.cloudflare-dns.com
3. Save the settings and restart the phone.

If the problem occurs after unlocking the bootloader or installing a custom recavator (for example, TWRP), the cause may be damage to the modem partition. In this case, only a complete flashing of the phone through the Mi Flash Tool with the choice of clean all and lock option will help.

6. Hardware malfunctions: when without service can not do

If all the software methods have been tried, but the problem remains, maybe the hardware is to blame.

• 📶 Antenna damage Wi-Fi/4G (often after falling or getting moisture).
• 🔌 Oxidation of contacts SIM-Cards (check the tray for corrosion).
• 🔥 Processor overheating (for example, due to a faulty battery or thermal paste).

You can check the Wi-Fi antenna using the test:

1. Install the WiFi Analyzer app from Google Play.
2. Look at the signal level (dBm) next to the router. If it's below -70 dBm and the router's distance is less than 5 meters, the antenna may be damaged.
3. Try connecting to the network at 2.4 GHz and 5 GHz separately, and if one of the frequencies is not working at all, it is a sign of hardware malfunction.

If there is a problem with the mobile network, check it out. SIM-map:

1. Extract. SIM-map and inspect contacts for scratches or oxidation.
2. Try inserting it into another phone, and if it doesn't work there, it's damaged.
3. If SIM It works on a different phone, but not your Xiaomi phone. SIM-tray.

⚠️ Note: On Xiaomi models with double SIM-A card (for example, Redmi Note 12 Pro)+) Sometimes there's a conflict between slots. If the Internet is only lost when you use the second slot. SIM, Try changing the cards or disabling one of them in the settings.

💡

If the phone falls or gets wet and the Internet problem comes after that, it's a 90% chance of hardware failure, and in this case, self-repair is not recommended: you should contact the service center.

7. Alternative solutions: from VPN to firmware change

If standard methods do not help, try non-obvious methods:

• 🌍 Use of the VPN: Sometimes, providers or routers block certain types of traffic. VPN (For example, ProtonVPN or Warp can circumvent these restrictions.
• 🔧 Change of the firmware region: in some regional versions MIUI (For example, in India or Europe, you have better network settings, so to change the region, you have to unlock the bootloader and flash the Fastboot-ROM version.
• 📡 QoS settings on router: if the internet is lost when you are under high load (for example, when downloading files), turn on QoS in the router settings and set a priority for your Xiaomi on the Internet. MAC-address.

For advanced users, there is a radical method of installing custom firmware (for example, LineageOS or ArrowOS), which will help if the problem is related to MIUI bugs.

• You will need to unlock the bootloader (this will reset all data!).
• Certain functions (e.g, IR-blaster NFC) They may not work properly.
• The guarantee will be lost.

If you do, follow the official instructions on the XDA Developers forum for your model, for example, the Pixel Experience firmware for the Poco F3, and the CrDroid for the Redmi Note 10 Pro.

FAQ: Answers to Frequent Questions