Wireless connectivity issues often come unexpectedly, forcing owners Xiaomi and Redmi to look for ways to clean up Bluetooth data.Accumulation of temporary files, profile conflicts or errors in the system list of paired devices can cause the smartphone to stop seeing headphones or car radio.Standard resetting is not always effective, so a deeper approach to cleaning system services is required.
In this article, we will discuss proven methods that will help you completely remove the cache and data of the communication module, you will learn how to forcefully stop the process, clear hidden files and reset the list of trusted devices to a factory state, which will restore stability to the connection without the need to flash the gadget.
Why you need to clean your Bluetooth cache and data
MIUI and HyperOS actively cache information about previously connected devices to speed up re-pairing, but over time, the database accumulates “junk” records and conflicting configurations, which leads to the fact that the communication module begins to work incorrectly, ignoring new connection requests.
Cleaning up data allows you to forcefully delete all saved profiles and reset protocol settings to factory values. This is especially true if you have changed your headset or car, and your old phone is struggling to connect to a forgotten device. Completely clearing the service's data is the only way to remove hidden error logs that are not visible in the normal settings menu.
In addition, regular cleaning helps to eliminate software failures caused by system updates. After a major Android update, old configuration files may not be compatible with the new version of drivers.
- 📉 Eliminating permanent connection breaks when listening to music
- 🔒 Removing traces of connection to other people’s or public devices
- ⚡ Accelerating the search for new gadgets in range
- 🛠 Fixing errors that occurred after updating the firmware
⚠️ Note: After clearing the Bluetooth data, you will need to pair all your devices (earphones, watches, speakers) again.
Preparation for resetting wireless communication settings
Before you start the active cleaning of system files, you need to perform a number of preparatory procedures, which minimizes the risk of loss of important data and ensures the stability of the process, first of all, you should turn off the wireless module in the control panel.
Then, you go to the device management menu and manually forget those gadgets that are no longer in use, which will make it easier to work with the system list and reduce the amount of data that needs to be processed, and if you have important settings for a smart home, it is better to save them separately.
☑️ Checklist of preparations
It's also worth checking if there are pending system updates, and sometimes the problem is solved by installing a security patch that fixes protocol vulnerabilities, and if the update doesn't work, then we'll go manually.
Basic method: Cleaning through the application menu
The safest and most efficient way to clean up data is to use the built-in Android App Manager, a method that does not require super-user rights and is available on all Xiaomi, Redmi and POCO models. You need to find the system process that is responsible for the module operation.
Open your smartphone settings and go to Apps. Select All Apps and click on the three dots in the upper right corner to select Show System Processes. In the list that opens, look for Bluetooth or Bluetooth MIDI Service.
When you go to the app menu, select Memory or Storage, and you'll see two important buttons here: Clear Cache and Clear Everything (or Reset), click first to clear the cache, then click on the full reset, and the system will alert you to the loss of data, confirm the action.
What if the “Bluetooth” item is not displayed?
Once you do this, the communication module will restart, and you'll notice that the icon in the curtain has disappeared and reappeared, and you can now try reconnecting the device by entering a pin if you need to.
Use of engineering menus and hidden settings
For more advanced users, you can access advanced settings through an engineering menu, which allows you not only to clean the data, but also to reconfigure the antenna settings. Beware, changing unknown parameters can lead to unstable operation.
To enter the test menu, open the Phone app and dial ##64663##. From the list that opens, select "Bluetooth." You can run device search tests or check the status of the module.
The alternative is to use a hidden settings menu. Go to Settings → About Phone → MIUI version and quickly tap 7 times on the build number to activate the developer mode. Then, in the advanced settings, look for the For Developers section.
- 🔍 Find the option “Reset Bluetooth settings” (if available in your version of the OS)
- 📡 Turn off Absolute Volume if you have a sound problem
- 🔄 Change the protocol version AVC (1.3 or 1.4 to improve quality
- 🚫 Turn off Wi-Fi and Bluetooth scans if you don’t use geolocation
You can find the option "Enable HCI Bluetooth Log" in the same menu, which allows you to record the logs of the module for later analysis, but for normal data cleaning, this is not necessary.
⚠️ Attention: Engineering menus are for specialists. Do not change the frequency or power settings of the signal unnecessarily, this can lead to a malfunction of the module or exceeding radiation standards.
Comparison of data cleanup methods
The choice of method depends on the severity of the problem and your willingness to experiment with the system settings. Below is a table that will help determine the best way to solve your problem.
| Method | Difficulty | Risk of data loss | Efficiency |
|---|---|---|---|
| Deletion of the device | Low. | No. | Low (only for one gadget) |
| Cleaning the app cache | Low. | No. | Medium (solves temporary failures) |
| Full Bluetooth data reset | Medium | List of pairs | High (removes most errors) |
| Network Reset (Network Reset) | Tall. | Wi-Fi and Bluetooth passwords | Maximum (radical) solution |
As you can see from the comparison, a full application data reset is a “middle ground”: it is more effective than simple cache cleaning, but safer than a complete network reset, which will affect both Wi-Fi settings and mobile Internet.
💡
If the problem persists after cleaning Bluetooth data, try “Network Settings Reset” which will return all network settings (Wi-Fi, mobile data, Bluetooth) to factory values.
Use the chart as a guideline. If a simple cleanup didn't work, move on to more radical measures gradually, checking the result after each step.
Radical measures: resetting network settings
If none of the previous methods helped restore normal operation, the last software method is resetting the network, which will affect not only Bluetooth, but also the settings of Wi-Fi and mobile networks, which ensures that any deep-seated configuration conflicts are removed.
To do this, go to Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. The system will request confirmation and input of the unlock password of the screen. Once confirmed, the phone will restart.
Once turned on, you'll have to re-enter passwords from all Wi-Fi networks and reinvent all Bluetooth devices, but in 95% of cases, this completely eliminates the software errors of the communication module that are not amenable to ordinary cleaning.
💡
Network resetting is an extreme software measure, and if it didn’t work, the problem is likely to be in the hardware (an antenna or chip) or require flashing the device.