Why Xiaomi is not working well on the Internet: a full analysis of the causes and solutions

Have you noticed that your Xiaomi smartphone is slower than other devices? Pages load forever, video slows down, and messengers are updated with a delay? This problem is familiar to many owners of the brand's devices - from budget Redmi to flagship Mi or POCO. The reasons can lie in both the hardware features of the smartphone and in the software settings that Xiaomi aggressively optimizes to save battery power.

In this article, we’ll look at all the possible causes of Xiaomi’s internet failure, from simple setup errors to hidden MIUI features that slow down connections, how to diagnose a problem, which settings to check first, and what to do if none of the standard methods worked, and why some Xiaomi models (such as the Redmi Note 10 or POCO X3 Pro) suffer from this problem more often than others – and how to fix it.

1.Problems with SIM-card-carrier

The first thing to rule out is the problems on the mobile operator side. Even if the Internet is stable on other devices, your mobile phone is not a problem. SIM-The card may have been incorrectly activated, locked, or worn out, especially for older cards that were used in multiple phones.

How to check:

• 📱 Replace it. SIM-If the problem persists, it is the operator's fault or the card itself.
• 🔄 Reboot your phone in flight mode for 30 seconds, then turn on your mobile data again.
• 📡 Check your operator’s coverage area: sometimes there may be temporary problems in a particular area (e.g., on the ground). 4G+ overload).

If SIM-map is fine, but the Internet still slows down, try to manually select the network in the settings:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Type of network.
2. Instead, automatically select 4G (LTE) or 3G (if 4G is unstable).
3. Turn off VoLTE and VoWiFi – sometimes these features conflict with your internet connection.

⚠️ Note: If you use two of these SIM-One of these cards can automatically turn off mobile data when you call the other one. SIM In Settings → SIM-maps and mobile networks → Double. SIM access point.

MIUI Optimization: Why the System is Retarding the Internet

MIUI is known for its aggressive optimization of background processes, which often leads to artificially limiting Internet speeds, which is done to save battery power, but in practice interferes with the normal operation of instant messengers, streaming services and even browsers.

The main perpetrators:

• 🔋 Power saving mode – limits background activity of applications, including data loading.
• 🚫 Traffic Limitation for Applications — MIUI It can block network access for “suspicious” applications.
• 📉 Automatic switching to 2G — If your smartphone thinks you haven’t used the internet in a long time.

How to turn off optimization:

1. Go to Settings → Battery and Performance → Battery Mode and select Performance (not Balanced or Charge Saving).
2. In Settings → Applications → Application Management → [Select App] disable Background Limitation and Auto Run for browsers and instant messengers.
3. In Settings → Connections and Sharing → Data Use → Data Transfer Settings turn off Background Limitation and Traffic Savings.

Important: On some models (e.g. Redmi) 9 or POCO M3) Even after optimizing MIUI You can reset your settings after you update. 1-2 weekdays.

3. Incorrect APN settings (Access Point)

If mobile internet is running very slowly or with cliffs, the problem may be incorrect APN (Access Point Name) settings. Operators periodically update these settings, but Xiaomi does not always tighten them automatically.

How to check and fix the APN:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
2. If there are several profiles, choose the one that matches your operator (for example, Internet.beeline.ru for Beeline).
3. If the profile is one, but the Internet is not working, click Reset to default values or create a new one manually.

Example of correct APN settings for popular carriers (2026):

⚠️ Note: If you use a virtual operator (e.g. Tinkoff Mobile or Yota), settings APN Check them out on the provider's website or in the support chat room.

4. Wi-Fi problems: why even at home the Internet is slowing down

If mobile internet is working normally but Wi-Fi on Xiaomi is constantly shutting down or running slowly, the reasons may be as follows:

• 📶 Weak router signal – Xiaomi often loses connection when signal level is below 70%.
• 🔒 Incompatible with Wi-Fi protocol – some routers do not work properly with Wi-Fi 6 on older Xiaomi models.
• 🔄 Automatic switching to mobile data – Wi-Fi Assistant function MIUI It may interfere with a stable connection.

How to fix it:

1. Turn off Wi-Fi Assistant in Settings → Wi-Fi → Additional → Wi-Fi Assistant.
2. Lock it down. IP-Address for your Xiaomi in your router settings (DHCP reservation).
3. Change the Wi-Fi channel on your router: instead of Auto, choose 6 or 11 (for 2.4 GHz) or 36-48 (for 5 GHz).
4. Turn off IPv6 in your router settings if your Xiaomi doesn’t support it correctly.

If the problem persists, try the speed test on different devices:

• 📱 On Xiaomi (via browser or Speedtest app).
• 💻 On a computer or other phone.

If the speed on Xiaomi is 2-3 times lower, the problem is in the smartphone. If everywhere is equally slow, the router or provider is to blame.

5. Software failures: cache, updates and viruses

Sometimes, the slow internet on Xiaomi is caused by system failures that are not obvious at first glance.

• 🗑️ Cache overflow – especially if you haven’t cleaned your system in a while.
• 🔄 Failed update MIUI — Some versions of the firmware have bugs with the network.
• 🦠 Viruses or malicious applications – they can consume traffic in the background.

How to clean the system:

1. Clear the cache: Settings → Storage → Clear the cache Also clear the cache separately for Settings, Phone and Google Play Services.
2. Check for viruses using Google Play Protect or Malwarebytes.
3. Reverse to the old firmware if the problem has occurred after the update. To do this: Download the old version of MIUI from the official website. Go to Settings → About Phone → System Update → Three Dots → Select a firmware file.

If you suspect that a specific update is a problem, check the reviews on the forums (e.g., the review, 4PDA or XDA Developers. Often users complain en masse about bugs with the network in certain versions. MIUI.

Hardware problems: antenna, modem or damage

If all software methods have been tried, but the Internet on Xiaomi still works poorly, the reason may be a hardware malfunction.

• 📡 antenna Wi-Fi/4G — It may come off after falling or getting moisture.
• 🔌 Modem - responsible for signal processing, can fail when overheating.
• 🔋 Battery - with strong wear (>80%) can cause modem reboots.

How to diagnose:

1. Check the antenna signal in the engineering menu: ##4636## In the phone information section, see Signal strength. If it's below -100 dBm, the antenna is not working well.
2. Test your smartphone without a case – some metal covers shield the signal.
3. Check the heating: If the back of the camera is warming heavily, it may indicate a modem problem.

If you suspect a hardware malfunction:

• 🔧 Contact Xiaomi Service Center (Warranty covers antenna and modem issues).
• 📱 Make a data backup before your visit – you may need a complete reset.
• 💰 If the phone is not warranty, the repair of the antenna will cost 1,500-3,000 rubles, the replacement of the modem - up to 5,000 rubles.

⚠️ Warning: If you drop your phone or it has been in contact with water, do not try to disassemble it yourself - this can lead to a short circuit.

7. Features of specific Xiaomi models

Some Xiaomi models have unique Internet problems related to their hardware platform or firmware, and here are the most problematic devices and their pains:

If your model is on this list, try these solutions. If not, look for information on thematic forums (for example, 4PDA), where users share fixes for specific devices.

💡

Before buying Xiaomi, check the feedback on the quality of communication for a particular model. For example, the POCO M4 Pro 5G is known for problems with the Dimensity 810 modem, which does not work well with Russian carriers.

8.Alternative solutions: from VPN to resetting settings

If none of the above has worked, try these non-standard methods:

• 🌍 Use it. VPN — Sometimes operators slow down traffic for certain services (for example, YouTube or Telegram). VPN This can circumvent the limitation.
• 🔄 Reset network settings: Settings → System system → Resetting settings → Reset network settings This will delete all stored Wi-Fi and mobile network settings.
• 📱 Make a hard reset, a last resort, if the problem is exactly in the software part!
• 🔧 Flip custom software (like LineageOS or Pixel Experience) if you're confident in your abilities. MIUI.

If you decide to reset your settings, follow this instruction:

After resetting, set up the phone again without restoring the backup – this will help eliminate the impact of old data on the network.

💡

If you have an Internet problem after you update MIUI, try to roll back to the previous version. Often, network bugs are only fixed in the following patches.

FAQ: Frequent questions about bad internet on Xiaomi