Why Bluetooth on Xiaomi Redmi is starting to glittle and when you need a reset
Have you encountered Xiaomi Redmi stop seeing headphones, speakers or fitness bracelets? or Bluetooth refuses to turn on at all, giving the error "Can not turn on"? The problem is familiar to many owners of smartphones of this line - especially on the Redmi Note 10/11/12, Redmi 9/10 and POCO X3/X4 models.
The causes of failures can be different: from a banal conflict of saved devices to deep errors in the firmware of MIUI. Most often to blame: a contaminated Bluetooth cache (accumulates after multiple connections), incorrect system updates or software bugs characteristic of specific versions of MIUI. For example, MIUI 13 was a massive problem with a connection break when transferring files, and MIUI 14 β with the inability to connect to automotive systems.
Before you bring your phone to the service, try resetting your Bluetooth settings, which takes less than 5 minutes and solves the problem 80 percent of the time, but it's important to do it right, because you risk losing all your stored devices or making the failure worse.
Preparation for resetting: what to do before
Resetting Bluetooth is not just a single button, but if you act at random, you may experience loss of passwords from stored devices (such as smart locks or car radios) or even a complete failure of the module.
- π Write down passwords from all Bluetooth devices that connect to your phone (especially important for smart gadgets like Mi Band or Xiaomi Smart Lock).
- π Charge your phone to at least 30% β when reset, the system can restart.
- π± Check the version. MIUI In Settings β On some firmware (e.g., the phone, MIUI 12.5 for Redmi Note 8 Pro reset works differently.
- π Turn off Bluetooth in the notification panel β this will prevent conflicts when resetting.
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If you have a Redmi with NFC (like the Note 11 Pro+), untie all your bank cards in Google Pay or Mi Pay before resetting them β they can be reset automatically.
If you use a Bluetooth headset that supports multipoint (simultaneously connecting to multiple devices), you will have to re-synchronize it with all your gadgets after reset, and some models (such as the Xiaomi Buds 3 Pro) require a full reset of your headphones.
Method 1: Standard reset via settings (for MIUI 12β14)
This is the safest method that works on most Redmi models (from Redmi 7 to Redmi Note 12 Pro+) and doesnβt affect other phone settings, but only clears the Bluetooth data.
- Open Settings (the gear icon on the main screen).
- Go to Connections and Sharing (on some firmwares, Bluetooth and other connections).
- Slip on Bluetooth, then tap on the three dots in the top right corner and select Bluetooth Settings.
- Scroll down and find Reset Bluetooth settings (or Clear data on older versions of MIUI).
- Confirm the action by pressing OK in the window that appears.
Check the visibility of the phone for other devices
Reboot your smartphone
Update the firmware of Bluetooth devices (if available)
Synchronize your gadgets again, starting with the priority
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Once reset, the phone will automatically restart. If you don't, reboot manually. Importantly, the first 1-2 minutes after resetting, the Bluetooth module may not work smoothly (e.g., not seeing the device). This is normal β wait 5-10 minutes.
What to do if the item "Reset Bluetooth settings" is not?
Method 2: Reset via Applications (if Bluetooth refuses to turn on)
If Bluetooth doesnβt turn on at all (the button in the notification panel is inactive or flashes), the standard reset may not work, in which case you need to clear the data and cache of the Bluetooth system application:
- Open Settings β Applications β Application Management.
- Click on the three dots in the upper right corner and select Show All Processes (or System Applications).
- Find Bluetooth (or Bluetooth MIDI Service) in the list and tap it.
- Select Warehouse and Cache, then click Clear Cache and Clear Data.
- Reboot the phone.
β οΈ Note: On some models (Redmi) 9A, Redmi 8) after this method, the Bluetooth option in the settings may disappear. Don't worry, just restart the phone again or update the firmware.
If Bluetooth still doesn't work after cleaning the data, check if the module is disabled at the system level.
- Enter the code ##4636## in the phone application.
- Select Phone Information.
- Scroll down and check the Bluetooth status β it should be Enabled.
Method 3: Hard reset via "All settings" (last chance)
If the first two methods didn't work, you'd have to use "heavy artillery," which is resetting all network settings, and that would not only delete Bluetooth data, but also:
- πΆ Saved Wi-Fi networks and their passwords
- π‘ Mobile Internet settings (APN)
- π VPN-configuration
Use this method only if others have not worked!
- Open the Settings. β The phone.
- Tap a few times on the MIUI version until the message βYouβre a developer!β appears (this unlocks hidden settings).
- Return to the main settings menu and select Additional β Reset.
- Click Reset Network Settings and confirm the action.
| Model Redmi | Recommended discharge method | Time to recover |
|---|---|---|
| Redmi Note 10/11/12 | Method 1 (standard) | 2-5 minutes |
| Redmi 9/9A/9C | Method 2 (via "Applications") | 5-10 minutes |
| Redmi 8/8A | Method 3 (hard reset) | 10-15 minutes |
| POCO X3/X4 | Method 1 or 2 | 3-7 minutes |
β οΈ Note: On Redmi with custom firmware (e.g. Pixel Experience or LineageOS), resetting through settings may not work.
What to do if the reset did not help: diagnosis of hardware problems
If Bluetooth still doesn't work after reset, the problem may be in the hardware.
- π Check the Bluetooth antenna: on most Redmis, it is located at the top of the case (near the camera.
- π Test with another battery: on the Redmi Note 8 Pro and Redmi 9T There are cases where a faulty battery blocked Bluetooth.
- π± Test in Safe Mode: Press the power button, then hold the power off until the suggestion to go to Safe Mode appears. If Bluetooth is working, it's the third-party app's fault.
If you suspect a hardware malfunction, you can check the operability of the module through the engineering menu:
Enter the phone app: ##232338###
If the label βBluetooth Testβ appears, the module is physically fit.
If not, repairs are required.π‘
On the Redmi Note 11 Pro+ 5G and Redmi K50, a common problem is the collapse of the Bluetooth antenna after a fall, in which case only a replacement of the plume will help.
How to avoid Bluetooth problems in the future
To avoid constant failure, follow these guidelines:
- π Clean the cache regularly: once every 2-3 months, go to Settings β Annexes β Bluetooth β Clear the cache.
- π± Don't plug too many devices: the optimal number is up to 5 gadgets. MIUI 13+ When the limit is exceeded, the lags begin.
- π Turn off Bluetooth in public places: this not only saves charge, but also prevents conflicts with other devices (especially relevant for the Redmi Note 10 Pro with an automatic connection bug).
- π² Update your firmware, but not immediately: wait 1-2 weeks after the release of the new version MIUI β Often in the first builds there are bugs with Bluetooth.
If you frequently transfer files over Bluetooth, use alternative methods (e.g., Google's Mi Share or Nearby Share) that are more stable and faster, especially on Redmi with Qualcomm Snapdragon (e.g., Redmi Note 11 Pro+).