12 Reasons Why Your Xiaomi Redmi Note Loses Wi-Fi – and How to Fix It

In 70% of cases they are to blame MIUI settings, background processes, or hardware limitations of budget devices. But there are also more serious causes—from a damaged Wi-Fi module to firmware conflicts. In this article, we'll look into these. all possible Wi-Fi shutdown scenarios Redmi, including those that are not mentioned in standard instructionsYou'll learn how to diagnose the problem, what parameters to check first, and when to take your phone to a service center.

Spoiler alert: in 9 out of 10 cases, the problem can be solved on your own in 5-15 minutes. We'll start with the simplest and most obvious causes and gradually work our way up to the rare pitfalls.

1. Router Problems: Why Everyone Blames the Smartphone, but the Router Is to Blame

The first thing to rule out is signal source malfunctionEven if Wi-Fi is working reliably on other devices, this doesn't guarantee that the problem isn't with the router. The fact is that Xiaomi Redmi (especially models with chipsets Qualcomm Snapdragon 4xx/6xx) are sensitive to:

• 📶 Congested 2.4 GHz channel — if there are many networks nearby, the phone may “lose” the connection due to interference.
• 🔄 Frequent switching between 2.4 and 5 GHz - Some routers do not cope well with "roaming" between ranges.
• ⚡ Unstable power supply to the router — if the power supply is worn out, Wi-Fi may “sag” under load.
• 🛡️ Aggressive security settings - for example, included WPA3 or filtering by MAC addresses.

How to check:

1. Connect Redmi Try connecting to a different Wi-Fi network (for example, a mobile hotspot on another phone). If the problem goes away, the router is to blame.
2. Go to the router's web interface (usually at 192.168.0.1 or 192.168.1.1) and check:
   • Operating mode (802.11n/ac/ax — it’s better to choose 802.11n for compatibility).
   • Channel width (for 2.4 GHz, set 20 MHz, for 5 GHz - 40 MHz).
   • Security type (optimally - WPA2-PSK).

⚠️ Attention: If you have a dual-band router, try disable 5 GHz in the settings and leave only 2.4 GHz. Many Redmi (especially Redmi 9A/9C) do not work well with automatic switching between ranges.

2. MIUI Crashes: Why Xiaomi's MIUI Cuts Wi-Fi in the Background

MIUI is known for its aggressive battery optimization., which often leads to spontaneous Wi-Fi disconnection. This affects all versions - from MIUI 12 to MIUI 14The main "culprits":

• 🔋 Background optimization — the system blocks network activity to “save” battery power.
• 📴 Automatic switching to mobile data - if the Wi-Fi signal is weak, Redmi canforcedly switch to 4G.
• 🔄 Resetting network settings after an update — a common problem after MIUI updates.

How to fix:

Disable "Adaptive battery optimization" in Settings → Battery

Add your app (like YouTube) to "Unlimited" Settings → Battery → Battery optimization

Disable "Auto-switch to mobile data" in Settings → SIM cards & mobile networks → Switch to mobile data

Set "Connect to Wi-Fi during sleep" to "Always" Settings → Wi-Fi → Advanced-->

If the problem appears after updating MIUI, try:

1. Reset network settings: Settings → About phone → Factory data reset → Reset Wi-Fi, mobile data, and Bluetooth settings.
2. Roll back to the previous firmware version (if you know that Wi-Fi worked reliably before).

⚠️ Attention: On some models Redmi (For example, Redmi Note 10 Pro) After resetting your Wi-Fi settings, you may need to re-linking to a Mi accountDo not delete your account until setup is complete!

3. Hardware faults: when the phone itself is to blame

If software methods do not help, the problem may lie in iron. The following are most often affected:

The most vulnerable models:

• Redmi 9/9A/9C - weak antennas, often fall off when dropped.
• Redmi Note 8/8 Pro — problems with the Wi-Fi module after 2–3 years of operation.
• Redmi Note 10S — sensitive to overheating (Wi-Fi turns off when heated above 45°C).

If you suspect a hardware problem but are not sure, try test your phone in safe mode:

1. Press and hold the power button until the power off menu appears.
2. Press and hold "Power off" (you will be prompted to enter safe mode).
3. Confirm and wait for the reboot.

Only system apps work in Safe Mode. If Wi-Fi is stable, the problem is software (apps or firmware). If not, the hardware is to blame.

4. App Conflicts: Who's Stealing Your Wi-Fi?

Some applications may block or intercept network traffic, which leads to a connection break. Typical suspects:

• 🛡️ VPN clients (For example, 1.1.1.1, ProtonVPN) - can “break” traffic routing.
• 🎮 Cheats for games (For example, GameGuardian) - often use non-standard network libraries.
• 📱 Applications for speeding up the Internet (For example, Internet Speed Master) - may conflict with Wi-Fi drivers.
• 🔒 Antiviruses (For example, Avast, 360 Security) - scan traffic and sometimes "freeze".

How to find the culprit:

1. Go to Settings → Applications → Manage applications.
2. Sort apps by installation date (new ones often cause problems).
3. Remove suspicious apps one by one and check your Wi-Fi stability.

If you don't want to delete applications, you can restrict their access to the network:

1. Go to Settings → SIM cards and mobile networks → Data transfer.
2. Select the application and disable it for it Wi-Fi.

5. Power Saving Settings: How MIUI Throttles Wi-Fi to Save 5% Battery

Xiaomi is known for its excessive optimization of energy consumption, which often leads to Wi-Fi drops. This is especially noticeable on models with a small battery (Redmi 9A, Redmi 10A). Main "traps":

• 🔋 Ultra Battery Mode - turns off Wi-Fi after 5-10 minutes of inactivity.
• 📉 Adaptive brightness - when the screen is dim, it may limit network activity.
• ⏳ Limiting background activity - closes the connection for "non-priority" applications.

How to disable optimization:

IN Settings → Battery → Battery Mode select "Performance"

IN Settings → Battery → Battery optimization Find your app (e.g. Chrome) and select "Unlimited"

IN Settings → Wi-Fi → Advanced Turn on "Connect to Wi-Fi during sleep" → "Always"

Turn off "Adaptive Brightness" in Settings → Display-->

If after these steps Wi-Fi still turns off, try reset battery settings:

1. Go to Settings → About phone → Factory data reset → Reset battery and performance settings.
2. Confirm the reset and restart your phone.

⚠️ Attention: On some firmware versions MIUI after resetting the battery settings may reset consumption statisticsThis is normal - the data will be restored within 1-2 days of the charging cycle.

6. IP addressing issues: why the phone doesn't receive an IP address from the router

If Redmi It connects to the network, but the internet doesn't work (there's a Wi-Fi icon, but the pages don't load). It's my fault. IP address conflict or a DHCP failure. This often happens:

• After changing the router.
• When connecting to public networks (in cafes, airports).
• If there are too many devices on the network (the router runs out of IP addresses).

How to fix:

1. Restart DHCP:
   1. Forget the network: Settings → Wi-Fi → [your network] → Remove.
   2. Reconnect and enter your password.
2. Set up a static IP:
   1. Go to Settings → Wi-Fi → [your network] → Change network → Advanced.
   2. In the section IP settings select Static.
   3. Please enter an IP address from your router's range (e.g. 192.168.0.100, if the router distributes addresses from 192.168.0.1).
   4. Enter gateway (192.168.0.1), subnet mask (255.255.255.0) and DNS (8.8.8.8 And 8.8.4.4).
3. Check your router settings:
   • Make sure DHCP is enabled.
   • Check if MAC address binding is enabled (if yes, add your MAC address) Redmi).

If after assigning a static IP the internet works, but after a while it disappears again, the problem is router DHCP pool overflow. Solution:

• Reduce the IP lease time in your router settings (for example, from 24 hours to 12).
• Or expand the range of distributed addresses (for example, with 192.168.0.100–192.168.0.200 to 192.168.0.100–192.168.0.250).

7. Overheating: why Redmi turns off Wi-Fi when heated

Many models Xiaomi Redmi (especially on chipsets Snapdragon 6xx And MediaTek Helio G) automatically turn off Wi-Fi when overheatedThis is designed to protect the module, but it often triggers false alarms. Normal temperatures for the Wi-Fi module:

• Up to 40°C – normal operation.
• 40–45°C — lags are possible.
• Above 45°C - the module switches off until it cools down.

How to check the temperature:

1. Install the application AIDA64 or CPU Monitor.
2. Open the section Sensors and look at the temperature Wi-Fi or SoC.
3. If the temperature is above 45°C, the phone is overheating.

Causes of overheating and solutions:

If your phone overheats even when idle, try:

• Disable background synchronization for unnecessary accounts (Google, Mi Account).
• Decrease screen brightness and turn off automatic adjustment.
• Use shell without animations (V Settings → About phone → MIUI version tap 7 times, then in Settings → Advanced → Developer Mode turn off all animations).

8. Updates and firmware: when the cure is worse than the disease

Sometimes MIUI or firmware updates bring more problems than solutions. Typical scenarios:

• 🔄 After the update, Wi-Fi starts disconnecting every 5-10 minutes.
• 📱 The phone “doesn’t see” the 5 GHz network (although it did see it before).
• 🔌 Wi-Fi only works after a reboot.

How to fight:

1. Roll back to the previous version of MIUI:
   1. Download the old firmware from the website en.miui.com (choose stable, not beta!).
   2. Go to Settings → About phone → System update → Three dots → Select update package.
   3. Select the downloaded file and confirm the rollback.
2. Reset network settings:

   Settings → About phone → Factory data reset → Reset Wi-Fi, mobile data, and Bluetooth settings

3. Install custom recovery (TWRP) and firmware:

   If the official methods don't help, you can try LineageOS or Pixel ExperienceBut remember: this is voids the warranty and requires unlocking the bootloader.

⚠️ Attention: Before rolling back the firmware make a backup copy through Settings → Advanced → Backup & resetSome MIUI updates block rollbacks - in this case, only a hard reset will help (hard reset).

FAQ: Frequently asked questions about Wi-Fi issues on Xiaomi Redmi