Module Bluetooth on smartphones Xiaomi (including rulers Redmi, POCO i Mi) sometimes starts to malfunction: devices are not found, the connection is interrupted, the sound is noisy, or there is no response to the connection at all. In 80% of cases, the problem is solved by software - just reset the module settings to factory settings. But how to do this correctly, so as not to aggravate the situation?
In this article we will examine 5 proven methods resetting Bluetooth - from standard (via the settings menu) to advanced (using ADB and the engineering menu). You will learn which method is suitable for your model Xiaomi, how to avoid common mistakes and what to do if the reset does not help. All instructions are relevant for devices on MIUI 14/15 i Android 13/14, but most steps also work on older versions.
Before you begin, check the basic points: charge the phone to at least 30%, make sure that the problem is not in the connected device itself (headphones, speaker, fitness bracelet), and turn off power saving modes - they often block background Bluetooth operation.
1. Standard reset via Android settings
The safest and recommended way is to use the built-in tools MIUI. It is suitable for most models Xiaomiincluding Redmi Note 12, POCO X5, Mi 11 and newer. The main advantage: does not require superuser rights (root) and does not affect other phone settings.
Instructions:
- Open the application
Settings(gear icon). - Go to the section
Connected devices(orBluetoothin older versions of MIUI). - Tap on the three dots in the upper right corner and select
Settings Bluetooth. - Find the option
Reset settingsorClear cache(the name may vary). - Confirm the action and reboot phone.
If there is no item Reset settings try an alternative way:
- ๐น
Settings โ Applications โ Manage applications โ Three dots โ Show system ones - ๐น Find
Bluetoothin the list, open it and clickStorage โ Clear cache/data
โ๏ธ Preparing to reset Bluetooth
โ ๏ธ Attention: After resetting through Managing applications all paired devices will be deleted. You will have to reconnect your headphones, smart watches and other gadgets. If you use Mi Band or Xiaomi Smart Home, save your account data in advance.
2. Reset via "Smartphone Settings" (MIUI)
In MIUI there is a hidden section that allows you to reset the settings of wireless modules without completely resetting the phone. This method works on most devices Xiaomiincluding Redmi 10/11, POCO F4 i Mi 12. The main thing is not to confuse it with a full reset to factory settings!
Step-by-step guide:
- Open
Settings โ About phone. - Tap 5-7 times on the item
MIUI version, until a notification appearsYou have become a developer!(if developer mode is already activated, skip this step). - Return to the main menu
Settingsand selectAdvanced โ Developer Settings. - Scroll down and find the section
Reset network settings(orReset Wi-Fi, mobile network and Bluetooth). - Confirm the reset and restart the device.
This method deletes all saved Wi-Fi networkspasswords and Bluetooth settings, but does not affect personal data (photos, contacts, messages). If after rebooting Bluetooth still does not work, proceed to the next method.
| Reset method | What is reset | Root required? | Execution time |
|---|---|---|---|
| Through Bluetooth settings | Module settings only | No | 1โ2 minutes |
| Through "Developer Settings" | Bluetooth + Wi-Fi + mobile network | No | 2โ3 minutes |
| Via the engineering menu | Bluetooth module only | No | 5 minutes |
| Via ADB | Full module reset | No (but you need a PC) | 10 minutes |
3. Reset via the engineering menu (code ##4636##)
Engineering menu is a hidden Android tool that allows you to test and configure the hardware components of your smartphone. To reset Bluetooth, we need the section RF Band Mode or Bluetooth Test. The method works on most Xiaomi, but the interface may differ depending on the model and firmware version.
How to open the engineering menu and reset Bluetooth:
- Open the application
Phoneand enter the combination:##4636##. - In the menu that appears, select
Phone information(orTesting). - Scroll down and find the section
BluetoothorRF Band Mode. - Tap on
Bluetooth Test(or a similar item). - Select
Disable Bluetooth, then againEnable Bluetooth. - Reboot the phone.
What to do if the engineering menu does not open?
On some models Xiaomi (for example, Redmi Note 9 Pro or POCO X3) the engineering menu may be blocked. In this case, try alternative codes:
##36446337## (to test the equipment) or ##232338## (to check the Bluetooth MAC address. If they do not work, go to the ADB method.
If after resetting through the engineering menu the problem remains, it may be faulty Bluetooth module. In this case, only repairs at a service center will help. However, before taking the phone to the workshop, try one more method - resetting via ADB.
4. Advanced reset via ADB (for advanced users)
Tool ADB (Android Debug Bridge) allows you to manage your smartphone via the command line from your computer. This method is suitable if standard methods do not work, but requires minimal technical skills. Advantage: ADB gives access to low-level commands that are not available through the GUI.
What you will need:
- ๐ฅ๏ธ Computer with Windows/macOS/Linux
- ๐ฑ USB cable (original or high-quality)
- ๐ง Installed drivers Xiaomi and
ADB Tools
Step-by-step guide:
- Download Platform Tools from the official Android website and unpack archive.
- Enable on your phone
USB debugging(Settings โ About phone โ MIUI version(tap 7 times) โDeveloper Settings โ USB Debugging). - Connect your phone to the computer and select mode
File Transfer. - Open Command Prompt (or Terminal on macOS/Linux) in the c folder
Platform Toolsand enter:
adb devices
(The name of your device should appear - this is confirmation of the connection.)
adb shell pm clear com.android.bluetooth
adb shell am broadcast -a android.bluetooth.adapter.action.STATE_CHANGED --ez android.bluetooth.adapter.extra.STATE 10
After completing the commands, restart your phone. This method completely resets Bluetooth settings, including saved devices and cache.
โ ๏ธ Attention: If after the commands adb devices your device does not appear, check the drivers, cable and debugging permissions on your phone. On some models Xiaomi (for example, Redmi K50), additional confirmation of the RSA key on the smartphone screen may be required.
5. Complete phone reset (last chance)
If none of the previous methods helped, the last resort remains - reset to factory settings. This method deletes all data from your phone, including apps, photos, and settings, so only use it as a last resort. Before you start, be sure to make a backup copy!
How to reset Xiaomi to factory settings:
- Open
Settings โ About phone โ Backup copy and reset. - Select
Reset settings(orReset to factory settings). - Tick the checkbox
Clear internal memoryif you want to delete everything files. - Confirm the action and wait for the process to complete (it will take 5-15 minutes).
After the reset, the phone will reboot and you will have to set it up again, as after purchase Bluetooth should work normally. If the problem remains, this is a clear sign. data-i="209">(damaged Bluetooth module or antenna). hardware failure (Bluetooth module or antenna is damaged).
Before a full reset, try going into Safe Mode (safe mode) and check the Bluetooth operation. If everything works in this mode, the problem is in one of the installed applications or perform a reset. via Safe Mode.
Common mistakes and how to avoid them
When resetting Bluetooth to Xiaomi users often make mistakes that only aggravate the problem. Here are the most common ones and ways to prevent them:
- ๐ซ Reset via recovery without backup: If you decide to reset the phone via
Recovery Mode, remember that this will result in the loss of all data. Always make a backup viaSettings โ About phone โ Backupor Mi Cloud. - ๐ซ Using unofficial firmware: On custom firmware (for example, LineageOS or Pixel Experience) Bluetooth reset may not work correctly. If you are not an experienced user, it is better to stay on the official one. MIUI.
- ๐ซ Ignoring updates: Before resetting, check if system updates are available (
Settings โ About phone โ System update). Often problems with Bluetooth are solved after installing the latest version MIUI.
Another typical mistake is trying to reset Bluetooth through cleaner applications (for example, Clean Master or CCleaner). These apps often delete important system files, which can lead to unstable operation of the module. Use only official tools MIUI or ADB.
If after resetting Bluetooth still does not work, check the physical condition of the antenna connector (especially if the phone has been dropped or has been in contact with water). On models Xiaomi with a metal case (Mi 9, Mi 10), the Bluetooth antenna is often attached to the back cover - damage to it leads to a complete loss of connection.
FAQ: Answers to frequently asked questions
After resetting the Bluetooth headphones connect, but the sound is interrupted. What to do?
If the sound is noisy or cuts out, the problem may be Bluetooth codec. Try:
- Open
Settings โ Connected devices โ Bluetooth settings โ Sound quality. - Select
Prioritize sound quality(priority quality) orPrioritize stability(stability priority). - If you use LDAC or aptX, try switching to
SBC(standard codec).
Also check if other devices are interfering (for example, a Wi-Fi router at a frequency of 2.4 GHz).
Is it possible to reset Bluetooth for only one device (for example, headphones)?
Yes, for this no need to reset the entire module. Enough:
- Open
Settings โ Connected devices โ Bluetooth. - Find the desired device in the list and tap on the gear icon next to it.
- Select
Forget device(orDelete). - Restart the phone and connect the device again.
This will only delete data about a specific gadget, without affecting other connections.
The Bluetooth reset worked, but a day later the problem returned. What's the matter?
If the reset helps temporarily, the reason may be:
- ๐ Power saving mode: Turn it off for Bluetooth in
Settings โ Battery โ Energy saving. - ๐ฑ Conflicting applications: Check if the antivirus or optimizer is blocking the operation of the module.
- ๐ก Interference from other devices: Bluetooth operates at a frequency of 2.4 GHz - the same frequencies are used by Wi-Fi, microwaves and wireless mice.
Also try disabling the function Double headphones (if it is enabled) - it sometimes causes crashes.
On my Xiaomi model there is no โReset Bluetooth settingsโ option. do?
On some devices (for example, Redmi 9A or POCO M3) this item may be missing. In this case:
- Use the method with
ADB(Section 4 of this article). - Or reset your network settings via
Developer settings(section 2).
If this does not help, try updating the firmware to the latest version MIUI - new versions often add missing options.
Can resetting Bluetooth affect for NFC or Wi-Fi to work?
No, resetting Bluetooth affects only this module. However, if you use the method via Developer settings (network reset), then the following will be reset:
- ๐ถ Saved Wi-Fi networks and their passwords
- ๐ฑ Mobile network settings (APN)
- ๐ VPN and proxy
NFC are not affected, since they work through a separate chip.