Why Xiaomi turns on Bluetooth itself: 7 reasons and how to turn off forever

Have you noticed that your Xiaomi, Redmi or POCO Bluetooth turns on on its own without you? This is a common problem that annoys users: the battery goes down faster, the device connects to unknown gadgets, and the notification panel constantly hangs the Bluetooth icon. In this article, we will analyze all possible causes of this behavior, from firmware bugs to hidden MIUI functions, and also give step-by-step instructions how to turn off automatic on forever.

It's not a model-dependent problem, it's found on Xiaomi 14 flagships and the Redmi Note 12 budget, the old POCO F1 and the new POCO X6 Pro, and it's due to the features of the MIUI shell, background processes, and even some applications, but the good news is that 90% of the time, you can fix the problem without resetting or contacting the service.

Before we get to the solutions, let's look at why this happens, and maybe your case is one of the standard situations that can be easily fixed in a few minutes.

1. Automatic connection to devices (Smart Bluetooth)

The most common reason is MIUI’s Smart Bluetooth feature, which automatically turns on the module when a previously paired device (headphones, speakers, fitness bracelet) is nearby, and is useful but often inappropriate – for example, when you pass someone else’s Mi Portable Speaker or someone else’s AirDots.

How does it work? MIUI remembers every device it's ever connected to, and tries to reconnect when it's detected, and even if you manually disabled Bluetooth, the system can turn it back on in 5 to 10 minutes.

• 🔍 How to check: Go to Settings → Bluetooth and see the list of "Conjugated devices." If there are gadgets that you haven't used in a long time, they need to be removed.
• ⚙️ How to disable: In the same Bluetooth settings, find Auto Connection or Smart Bluetooth (names may vary depending on the version). MIUI) and deactivate it.
• ⚠️ Note: Once you turn off this feature, you'll have to manually connect the devices each time, but Bluetooth will stop turning on itself.

If you don't have a Smart Bluetooth item on the menu, your version of MIUI is hiding it elsewhere. Try the path: Settings → Connections & Sharing → Bluetooth → More

2.Found applications and their permissions

Many apps (especially fitness trackers, instant messengers, and games) request Bluetooth access to work with accessories, some of which may turn on the module without permission even if you turn it off.

• 🎧 Headphone Apps (Mi Headset, Haylou Fun, Soundcore)
• 🏃 Fitness trackers (Mi Fit, Zepp Life, Google Fit)
• 🎮 Game Services (Xbox Game Pass, Steam Link)
• 📱 Messengers (Telegram, Viber – for transferring files over Bluetooth)

How do you fix this? You need to restrict the rights to suspicious applications.

1. Open Settings → Applications → Application Management.
2. Select an application that can use Bluetooth (such as Mi Fit).
3. Go to Permissions and turn off Bluetooth access.
4. In the AutoRun section, forbid the application to work in the background.

If you're not sure which app is to blame, try Safe Mode, which only runs system programs, and if Bluetooth stopped turning on itself, it's one of the apps you installed.

3. firmware errors and MIUI bugs

Sometimes the problem lies in the bugs of the MIUI shell. This is especially true for devices on MIUI 12-14, where there have been mass complaints about the spontaneous inclusion of Bluetooth and Wi-Fi. Xiaomi usually corrects such errors in subsequent updates, but not always promptly.

How do you know if the firmware is to blame?

• 🔄 Bluetooth is turned on even after a complete reset.
• 📱 The problem arose after the update. MIUI.
• 🔧 The system logs (available via ##4636##) have errors related to bluetoothd.

Decisions:

1. Update your firmware to the latest version: Settings → About Phone → System Update.
2. If there are no updates, try to roll back to the stable version of MIUI via Fastboot (instructions are available on the 4PDA forum).
3. In extreme cases, install custom firmware (such as Pixel Experience or LineageOS), but this will require unlocking the bootloader.

Important: if the problem has occurred after the update to MIUI 14 on the Redmi Note models 11/12, Try resetting your network settings (Settings) → SIM-maps and mobile networks → Resetting the network settings. This helps in 60% case.

4. Hidden MIUI functions (Mi Share, Quick Share, Mi AI)

Xiaomi is embedding a few hidden features into its devices that can activate Bluetooth without you knowing.

These features often run in the background and can include Bluetooth to find other devices, such as Mi Share scans the airwaves every 5 to 10 minutes, even if you’re not using it.

⚠️ Warning: Disabling Quick Share may interfere with other Google features, such as Find My Device. If you're concerned about security, leave it on but restrict access to location.

5. Hardware problems (Bluetooth module, antenna)

If all the software methods didn't work, it could be the hardware, and most of the time, it's the hardware.

• 🔌 Faulty Bluetooth module (for example, after falling or getting moisture).
• 📡 Damaged antenna (especially in models with metal housing, where the signal is shielded).
• 🔋 Unstable power supply of the module (due to a bloated battery or motherboard problems).

How to diagnose:

1. Try connecting your phone to your PC through ADB And then you have to do the command: adb shell dumpsy. bluetooth_manager If the output has lines with error or failed, the module is defective.
2. Check to see if the top of the phone is warming (the Bluetooth antenna is located there), and overheating can cause false positives.
3. Connect headphones: If the sound is interrupted or distorted, the antenna is a problem.

Decisions:

• 🛠️ Replacement of Bluetooth module (cost – from 1,500) ₽ service-centre).
• 🔧 Flashing the module (sometimes helps reset via Fastboot).
• 📱 Replacement of antenna (relevant to the POCO F3, Redmi Note 10 Pro and other models with aluminum body).

⚠️ Warning: If the phone has been in water or dropped, don't try to repair it yourself.Corrode on the board can lead to short circuits with unqualified intervention.

6. Viruses and malware

It's rare, but it happens that Bluetooth is turned on because of viruses or spyware.

• 🕵️ Scan surrounding devices for data collection.
• 📤 Transfer your files to other gadgets.
• 🔊 Connect to other people's speakers for listening.

How to check:

1. Install antivirus (Dr.Web, Kaspersky, Malwarebytes) and scan the system.
2. Check the list of installed applications for suspicious ones (Cleaner, Booster, unknown games).
3. Open Settings → Battery → Battery Use and see which applications use up energy in the background.

If you find a virus, delete it and reset your network settings (Settings) → SIM-maps and mobile networks → Resetting network settings. This will remove any stored Bluetooth and Wi-Fi connections that may have been compromised.

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Before scanning for viruses, disconnect your phone from the internet so that the malware can’t transmit your data.

7. Resetting settings and extreme measures

If none of these things work, you're left with a reset or a firmware reflash, which is radical, but they're guaranteed to solve the problem 99 percent of the time.

How to reset:

1. Save important data (photos, contacts, messages) on Google Drive or PC.
2. Go to Settings → About Phone → Resetting → Reset all settings.
3. After the reboot, don’t restore data from the backup – check first if Bluetooth is turned on itself.

If the reset doesn't work, you'll have to flash it over Fastboot or Recovery.

• Download the official firmware for your model from en.miui.com.
• Use the Mi Flash Tool to install via Fastboot.
• If the phone doesn’t turn on, go through it. EDL-Mode (requires an authorized Xiaomi account).

⚠️ Attention: Flip-through through EDL It can lock your phone if you don't have the bootloader unlocked. Before the procedure, check the lock status with the command: fastboot oem device-info Look for Device unlocked: true.

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Resetting helps in 90% of cases, but if the problem returns, it is the fault of the firmware or hardware malfunction.

FAQ: Frequent questions