Why the access point on Xiaomi is turned off by itself: a full analysis of the causes and solutions

You've turned on the hotspot on a Xiaomi smartphone, you've plugged in a laptop or tablet, and after 5-10 minutes, the Internet goes missing -- and there's a notification on the phone screen that says, "Access Point off." Familiar situation? This problem is found on models from the Redmi Note 10 Pro to the Xiaomi 13 Ultra, and it's caused by both the MIUI settings and hardware limitations. In 80% of cases, you can fix the problem without going to the service, just know where to look.

In this article, we will analyze all possible causes of spontaneous shutdown of hotspot on Xiaomi, including hidden power saving settings, conflicts with the Internet. SIM-You'll learn how to tell a software failure from a hardware failure, what parameters to check first, and what to do if standard methods don't work. For convenience, we have collected step-by-step instructions with screenshots and a table of model compatibility - so you save time on diagnosis.

1. MIUI Energy Saving: Hidden Settings That Kill an Access Point

The most common reason Xiaomi has turned off hotspots is aggressive power optimization, the default MIUI system restricts the background activity of apps and services to extend battery life, and unfortunately, the Wi-Fi Hotspot module is also often handed out.

How does this manifest? The access point can be turned off by:

• 🔋 5-10 minutes (if the phone is discharged to 30% or below)
• ⏱️ 15–30 minutes (with active energy saving)
• 🔄 After locking the screen (if the function "Auto-disconnect when blocking" is enabled»)

To fix this, you need to manually add the hotspot service to the exception list.

1. Open Settings → Battery and Performance → Battery Consumption Management.
2. Select the App tab and find in the Settings list (cog icon).
3. Slip it and select it without restrictions.
4. Go back and find the Access Point and modem – also install No Limits.

Disable "Auto-disconnection when blocking" in the settings of the access point |

Add "Settings" and "Access Point" to battery exclusions |

Turn off "Adaptive battery" in "Special access" |

Set the performance mode "High" (in the battery settings)-->

If you still have a problem after these manipulations, check another setting: in Settings → Connections and Sharing → Access Point must be turned off when no connected devices are available. This option is active by default on many MIUI firmwares 12-14.

SIM-card conflicts: why the operator can block the distribution

Many users are unaware that the mobile operator may limit the operation of the access point at the level of the Internet. SIM-This applies to both traffic-restricted tariffs and “no-limit” offers, where the distribution of the Internet is prohibited by the terms of the contract.

Signs of blocking by the operator:

• 📵 Access point is turned off after 1-2 hours of operation.
• 🔄 After a phone restart, the hotspot lasts longer, but then disappears again.
• 📶 In system logs (Settings) → The phone. → Version. MIUI → press 5 Once on the "core" there are errors such as DUN_ERROR or TETHER_DENIED.

To check if the operator is blocking the distribution, follow the following steps:

1. Put it in. SIM-card to another phone (not Xiaomi) and try to enable an access point.
2. If the problem recurs, contact the operator and check if your tariff supports tethering (internet distribution).
3. Some of the tariffs (for example, the2 or Yota) the distribution is unlocked after sending USSD-For MTS, this is the team *111*525#, Beeline — *110*180#.

MTS|

Beeline |

MegaFon |

Tele2.|

Yota|

Other-->

If the operator has confirmed the lock, you have two options:

1. Change the tariff to support tethering (usually these are tariffs marked "For a smartphone" or "Unlimited").
2. Use of workarounds - for example, VPN-distribution through applications such as PDANet+ ClockworkMod Tether (requires root).

⚠️ Note: Some operators (e.g. MegaFon) may block an account for system bypassing tethering restrictions.

3. Software failures: when firmware or applications are to blame

Mistakes in MIUI firmware are the second most common cause of spontaneous hotspot shutdowns, especially for:

• 📱 Devices on MIUI 12.5–13 (Bugs with WifiTethering module known).
• 🔄 Phones after the update "by air» (OTA), Where new settings conflict with old ones.
• 🛠️ Devices with custom firmware (for example, LineageOS or Pixel Experience).

How to diagnose a software failure:

1. Check the system logs for errors: adb logcat | grep -i "wifi\|tether\|hotspot" (ADB and USB debugging enabled).
2. If you have lines in your logs with E/WifiTethering: Failed to start or D/ConnectivityService: Tethering failed, the problem is exactly in the software.

Solutions:

If the failure occurred after installing custom firmware, check the compatibility of the WifiTethering module with your device. For example, on POCO X3 NFC, some LineageOS builds require an additional patch to properly work the hotspot.

Hardware problems: overheating, antenna and battery

If software methods didn’t work, the reason could be the hardware. Xiaomi (especially low-end models like the Redmi 9A or POCO M3) is known for problems with:

• 🔥 Chip overheating Wi-Fi/Bluetooth (module Broadcom BCM43xx).
• 📡 Antenna malfunction (often after falls or moisture hits).
• 🔋 Battery wear (if its capacity has fallen below 70%, the phone forcibly shuts down power-intensive functions).

How to check the hardware:

1. Overheating: Install the AIDA64 app and check the temperature of the Wi-Fi module while the hotspot is running, and if it exceeds 65°C, the cooling problem is.
2. Antenna: See if the Wi-Fi or mobile network signal is lost in certain positions of the phone (for example, if you hold it at an angle).
3. Battery: In Settings → Battery → Battery → Check the current capacity. If it is below 3000 mAh (for a battery of 4000 mAh) – a replacement is required.

Solutions for hardware problems:

• 🔧 Overheating: Remove the case, use the phone on a flat surface (not on soft coatings). POCO F1 or Redmi K20 Pro will help replace the heat paste (requires disassembly).
• 📡 Antenna: If a problem after a fall, check the integrity of the antenna contacts (on the board they are marked as WIFI_ANT).
• 🔋 Battery: Replace the battery (original batteries for Xiaomi can be found by code, for example, BM4B For the Redmi Note 8 Pro).

⚠️ Note: On some models (for example, Xiaomi Mi 11), overheating of the Wi-Fi module can lead to loss of communication with the user. SIM-If you're using a card after you turn off the hotspot, you can only replace the module in the service.

5. Conflicts with connected devices

Sometimes the problem isn't with the phone, it's with the devices that are connected to it.

• 💻 Laptop with Windows 10/11 It can “sleep” the Wi-Fi adapter, breaking the connection.
• 📱 Older smartphones (on Android 8-9) may not support modern hotspot security protocols (WPA3).
• 🎮 Game consoles (PS4/PS5, Nintendo Switch sometimes conflicts with settings DHCP Xiaomi.

How to diagnose the problem:

1. Connect another device to the hotspot (like a second phone), and if it works consistently, the problem is with the first gadget.
2. Check the network settings on your connected device: On Windows: Control Panel → Network Adapters → Wi-Fi Properties → Power Setup → Turn off “Allow Shutdown to Save Energy.” On macOS: System Settings → Network → Wi-Fi → Additional → Uncheck “Automatically Connect to This Network.”

If the connected device is old, try changing the settings of the access point on the phone:

1. Open Settings → Access Point → Access Point settings.
2. Change Security from WPA3-Personal to WPA2-Personal.
3. Set the band to 2.4 GHz (if you connect to a console or an old laptop).

How to check and clean your phone:

1. Install Malwarebytes or Dr.Web Light and perform a full scan.
2. Check the list of installed applications for suspicious ones (Settings → Applications → Application Management).
3. If the virus is detected but not removed, reset to factory settings (Settings → Additional → Recovery and Reset).

⚠️ Note: Some viruses (e.g. Android.Triada) are embedded in system files and can damage the WifiTethering module.

7. Features of specific Xiaomi models

Some Xiaomi models have unique access point issues, and we put them together in a table:

If your model isn’t in the spreadsheet, check the 4PDA or XDA-Developers forums, which often publish patches for specific devices. For example, for the POCO X3 NFC, there is a modified build.prop file that fixes hotspot issues.

8. Alternative ways of distributing the Internet

If the standard access point has not worked steadily, you can use bypass methods:

• 🔗 USB-Modem: Connect your phone to your PC via cable and turn on USB-Internet settings → Connection and sharing. It's not dependent on the Wi-Fi module, and it's more stable.
• 🔄 Bluetooth modem: paired with Windows 10/11 or macOS can be distributed via Bluetooth (Settings) → Bluetooth → Modem mode. Speed is lower, but there's no problem with shutting down.
• 🌐 VPN-Distribution: Applications like NetShare or PdaNet+ Create a virtual access point through VPN, circumventing operator restrictions.

For USB-Windows modem may require installing Xiaomi drivers:

1. Download Mi PC Suite from the official website.
2. Connect the phone in File Transfer (MTP) mode.
3. In Device Manager, update the driver for Xiaomi Composite MDB Interface.

💡

USB-Modem is the most stable way to distribute the Internet with Xiaomi, as it does not depend on the state of the Wi-Fi module and battery.

FAQ: Frequent questions about the access point on Xiaomi