Why the Internet works poorly on Xiaomi smartphones: a full analysis of the causes and solutions

Slow internet on Xiaomi is one of the most common problems faced by smartphone owners, and symptoms can range from occasional YouTube “hangs” to a complete lack of connection, when the device persistently displays the E icon instead of the E icon. 4G Often users blame this on “curved” firmware or weak operator signal, but in fact, there are many more reasons - and many of them can be eliminated on their own.

In this article, we’ll look at all the possible causes of Xiaomi’s internet failure, from simple setup errors to hardware malfunctions, how to diagnose a problem, which settings to check first, and what to do if none of the standard methods worked.

If you have a Redmi Note 10 Pro, POCO X3 Pro or other model MIUI 14+, Some settings may differ from those described below. In this case, use the search by article (Ctrl)+F) indicating your firmware version.

1.Problems with SIM-card or mobile operator

The first thing to check is whether the deterioration of the connection is related to your SIM-Often users suffer for months with slow Internet, unaware that the problem lies in the basic things.

🔹 How to diagnose:

• 📱 Check the balance and the rate. Go to the operator's personal account (for example, my.tele2.ru or lk.mts.ru) and make sure you don’t run out of gigabytes or activate the “night” mode with a speed limit.
• 🔄 Reset your smartphone in flight mode. Turn on flight mode for 30 seconds, then turn it off.
• 📶 Compare the speed on another device. Insert. SIM-card to another phone and check if the problem persists.

⚠️

Attention: Xiaomi with two SIM-Cards (Redmi Note 11 Pro)+, POCO F4 Network priority settings are often confused if both of you are activated. SIM, Try to disable the second in Settings → SIM-maps and mobile networks → Choice SIM data-data.

📊 Table: Frequent restrictions of operators (2026)

If the problem is confirmed by the operator, contact support and request re-registration on the network or change of tariff, in 30% of cases this solves the problem without additional manipulation of the smartphone.

2. Incorrect settings of mobile Internet (APN)

Configuration errors APN (Access Point Name is one of the main reasons why Xiaomi is not catching 4G It's a slow-speed operation, especially after you update your firmware or reset your settings.

🔧 How to set up APN manually:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
2. Click Add and enter your operator’s settings (see table below).
3. Save the settings and restart the phone.

📋 Parameters APN For popular operators (2026):

MTS:


Name: MTS




APN: internet.mts.ru




Proxy: Not specified




Port: Not specified




User name: mts




Password: mts




Type of authentication: PAP or CHAP





Beeline:




Name: Beeline




APN: internet.beeline.ru




Proxy: 192.168.094.020




Port: 8080




Username: beeline




Password: beeline

⚠️

Attention: On Xiaomi with MIUI 13+ manually APN Sometimes you need to reset your network settings (Settings) → System system → Reset → Resetting Wi-Fi, mobile network and Bluetooth settings without this change may not apply!

3. Software failures and MIUI errors

MIUI It is known for its features, which sometimes turn into bugs, especially traffic optimization features that can block background processes or limit speed.

🛠 What to check first:

• 🤖 Turn off "Intelligent Traffic Consumption." Go to Settings → Connections and sharing → Use of data → ⚙️ → Smart traffic consumption and deactivate the option.
• 🔄 Reset network settings. Pathway: Settings → System system → Reset → Resetting Wi-Fi, Mobile Network and Bluetooth.
• 📦 Clear the system application cache. Go to Settings. → Annexes → Application management → ⚙️ → Show all the processes, find Telephony Provider and Sim Toolkit, then clear the cache.

💡

💡

After the update MIUI If you've lost the Internet, try to retrace the previous version via Fastboot. 4PDA device-themed.

🔍 Diagnostics through the Engineering Menu:

Dial in the phone application the code:

##4636##

Go to the Phone Information tab and see the Network Type option. HSPA+ or EDGE instead LTE, problem.

Hardware malfunctions: antenna, communication module, sim tray

If the software methods didn't work, the problem could be the hardware, and the most common ones are:

• 📡 Antenna module – contact oxidation or mechanical damage after falling.
• 🔌 SIM tray – pollution or deformation, which is why SIM-squirt.
• 📶 Communication module (e.g. Qualcomm) X55 into POCO F3) — overheating.

🔧 How to check:

1. Extract. SIM-check the tray for damage. try inserting the card into another slot (if you have one).
2. Check if the top of the phone (where the antenna is located) is warming while using the mobile internet.
3. Hold your phone to the window or walk out onto the balcony – if the signal has improved, the problem is a weak coating (solved by an external antenna or repeat operator).

⚠️

Note: Xiaomi with metal body (Mi 11, Mi) 10T) And the antennas are on the sides of the device, and if you're using a case with metal inserts, it can shield the signal.

🛒 Cost of repair (average prices in 2026):

Conflicts with VPN, firewall or antivirus

Applications to protect or bypass blockings often cause Internet brakes, VPN can redirect all traffic through a remote server at a low speed, and the firewall can MIUI — block out background connections.

🔍 How to identify the culprit:

• 🛡 Turn off the built-in firewall. → Annexes → Permits → firewall.
• 🌍 Deactivate. VPN. Go to Settings. → Connections and sharing → VPN and disable all profiles.
• 📱 Check the antivirus. Apps like Avast or 360 Security can restrict traffic. Try removing them temporarily.

📌

💡

If after the shutdown VPN The speed has increased, but you need to bypass locks, try changing the protocol from OpenVPN to WireGuard (for example, in the Warp app from Cloudflare).

⚠️

Attention: On Xiaomi with MIUI 14+ The built-in Game Turbo can limit background traffic even outside of games. → Special facilities → Game Turbo.

6. Wi-Fi network overload or router settings are incorrect

If the Internet problems only occur when connecting to Wi-Fi, either the router or the network settings on Xiaomi itself are to blame.

• 📶 Channel congestion. Neighboring networks use the same channel as yours.
• 🔒 Incompatible encryption, for example, WPA3 It may not be supported by older models.
• 📡 Weak signal: the router is too far or there are obstacles (walls, furniture).

🔧 How to set up Wi-Fi on Xiaomi:

1. Forget the network: Settings → Wi-Fi → [Your network] → Forget it.
2. Connect again by entering the password.
3. Turn off Smart Switching in Wi-Fi settings (this is a function of automatically switching to mobile data when the signal is weak).

📊 Optimal router settings for Xiaomi:

💡

💡

If Wi-Fi is slow only on Xiaomi, and on other devices – normal, try in the settings of the router to turn off MU-MIMO. Some Xiaomi models (e.g. Redmi) 9A) This technology is not working well.

Reboot router|Check the channel in the Wi-Fi Analyzer application|Update router firmware|Shut down. IPv6 network-setting|Change. DNS 1.1.1.1-->

7.Outdated firmware or beta version MIUI

Xiaomi regularly releases updates, but not all of them are stable, especially in beta versions. MIUI or POCO/Redmi, Internet bugs are a frequent occurrence.

📲 How to Update the Firmware Correctly:

1. Check the current version: Settings → About Phone → MIUI version.
2. If you have an update, download it over Wi-Fi (not mobile data!).
3. Before installation, make a backup to Settings → Additional → Backup and Reset.

⚠️ What to do if the Internet disappears after the update:

• 🔄 Reverse to the stable version. Download the full firmware package from the official website and run through Recovery.
• 📦 Clear the cache. In Recovery, select Wipe Cache Partition.
• 🔧 Reset your network settings. How to do this is described in section 3.

📌

💡

If you are a member of the program MIUI Beta, back to stable branch, 2026, betas have been bugged with Qualcomm. X60 (It is used by Xiaomi 12, POCO F4 GT), for which 5G runaway.

8.When to contact the service center

If you’ve tried all the methods, but the Internet on Xiaomi still doesn’t work well, the problem is probably hardware.

• 📵 The phone doesn't even catch the network. 2G, though SIM-The card works on other devices.
• 🔥 Overheating in the antenna area. The upper part of the housing gets very hot when you try to connect to the Internet.
• 🔄 Constant “jumping” between 4G and 3G. In the engineering menu, you can see that the phone is continuously reconnected to the tower.
• 💥 Speed drops to 0 Kbps The speed appears, then disappears completely.

🔧 What to do before visiting the service:

Make a backup copy of the data|Write it down. IMEI (dial *#06#)|Delete the pattern lock/password|Check the warranty card|Take a picture of the external damage (if any)-->

⚠️

Note: If your Xiaomi warranty is not open yourself and do not stitch through Fastboot - this will void the warranty.

💰 Average Diagnostic Prices (2026):

• 🔍 Diagnostics of the communication module: 500–1000 ₽.
• 🛠 Repair/replacement of antennas: 1,200–3,000 ₽.
• 📡 Replacement of the module Wi-Fi/Bluetooth: 2 500–5 000 ₽.

FAQ: Frequent questions about the Internet problems on Xiaomi