Connecting wireless headphones to Xiaomi Redmi 9C: instruction + error solving

Wireless headphones have become an integral part of everyday life – they are convenient for listening to music, calls or podcasts without confusing wires. However, even with a simple device like the Xiaomi Redmi 9C, users often have questions: why the phone does not see the headphones, how to turn on the pairing mode or what to do if the sound is interrupted. This article will help you understand all the nuances of connecting Bluetooth headphones to a smartphone, including step-by-step instructions, a compatibility table and solutions to typical problems.

The Redmi 9C is equipped with Bluetooth 5.0, which supports most modern wireless headsets, from the budget Xiaomi AirDots to the premium Sony WH-1000XM4. However, even with such a technique, there can be difficulties: for example, the smartphone does not detect the device due to the power saving mode on or outdated firmware. We will consider not only the standard way of connecting, but also alternative methods for cases when something goes wrong.

1. Preparation of headphones and phone for connection

Before pairing devices, make sure both gadgets are ready to work.

• 🔋 Headphone Charging: Make sure the headset has a charge level of at least 30%.Most models (e.g. Redmi AirDots 2 or Haylou) GT1) automatically shut down when the discharge is below 10%, which can interrupt the connection process.
• 📱 Pair mode: Activate it on your headphones. Usually, you need to hold the power button for 3-5 seconds until the indicator flashes red and blue (or white) colors. For Apple AirPods, you just need to open the case cover.
• 🔄 Reset previous connections: If the headphones were already paired with another device, they may need to be reset.For example, for Xiaomi AirDots, you need to press the touchpad three times for 2 seconds.

Now prepare the smartphone Redmi 9C:

• 📶 Turn on Bluetooth: Swipe down from the top edge of the screen to open the Quick Settings panel, and tap on the Bluetooth icon. Alternatively: go to Settings → Connections and sharing → Bluetooth.
• 🔍 Turn off power saving modes: They can block the search for new devices. → Battery and productivity → Power saving mode and deactivate it.
• 🔄 Update firmware: Outdated software sometimes causes connection problems. Check for updates in Settings → The phone. → Updating the system.

⚠️ Warning: If you connect Apple AirPods or Samsung Galaxy Buds headphones, make sure the phone has the app turned off. MIUI Optimization (in developer settings) can block pairing with devices from other brands.

2. Step-by-step instructions: how to connect headphones to Redmi 9C

Follow this algorithm to connect your headphones to your phone:

1. Activate Bluetooth on your phone: As described above, via the notification panel or settings.
2. Translate the headphones to search mode: Usually you need to hold the power button until the indicator blinks (for Redmi AirDots 3 - 5 seconds).
3. Start searching for devices: In the Bluetooth menu on your phone, click Device Search or Add a new device.
4. Select headphones from the list: When they appear (like Mi True Wireless Earphones), tap the title.
5. Confirm pairing: The phone may be asked to confirm the code (usually 0000 or 1234). Some headphones (such as the JBL Tune 120TWS) do not require code.

Once you've successfully connected your headphones, you'll see the device list saying, "Plug in." Now you can listen to audio through the headset. To check whether you're working, play any song or video -- the sound should automatically switch to the headphones.

If the headphones don’t connect the first time, try the following:

• 🔄 Reboot both devices: Turn off your headphones and phone, then turn them on again.
• 📱 Remove Headphones from the Device List: In the Bluetooth Menu, click on the gear next to the headset name and select Forget the Device, then repeat pairing.
• 🔧 Reset network settings: Go to Settings → System and device → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth.

3. Compatibility table: which headphones work with Redmi 9C

Not all wireless headphones work equally well with the Xiaomi Redmi 9C. Below is a table of compatibility of popular models with an indication of possible problems and solutions.

Important: Headphones with support for aptX or LDAC codecs (such as Sony WH-1000XM5) on the Redmi 9C will only work in SBC/AAC mode, since the phone does not support advanced audio codecs.

4. Solving common connection problems

Even after successful pairing, users are faced with common errors, and let's look at the most common ones and how to fix them.

Problem 1: The phone can't see the headphones

If Redmi 9C does not find the headset in the list of available devices:

• 🔌 Check headphone charge: Discharged devices may not show up in search.
• 📱 Update Bluetooth Driver: Go to Settings → The phone. → Version. MIUI and tap 7 times on the kernel line to open the diagnostic menu.
• 🔄 Reset network settings: As described in the previous section.

Problem 2: Headphones are connected, but there is no sound

If the headset is paired, but the sound goes through the speaker of the phone:

• 🎵 Check your Bluetooth profile: In the headphone settings (cog next to the name), select Use for media audio.
• 🔊 Turn off monopolistic mode: Some apps (like YouTube or Netflix) can block audio output to Bluetooth. Close them through the latest app menu.
• 🔧 Reset the sound settings: Go to Settings → Sound and vibration → Resetting the sound settings.

⚠️ Note: If you use headphones with a microphone (for example, Redmi AirDots 3 Pro), but the interlocutor does not hear you during the call, check whether access to the microphone for the Phone application is enabled in Settings. → Annexes → Permits → Microphone.

5 How to connect two devices to headphones at the same time

Some wireless headphones (such as the Xiaomi AirDots 3 Pro or Samsung Galaxy Buds Pro) support multipoint, which is the ability to connect to two devices at once. This is handy if you want to quickly switch between your phone and laptop. Here's how to do it on the Redmi 9C:

1. Connect the headphones to the first device (such as a phone) as usual.
2. Activate the pairing mode on the headphones (usually double tap on the touch panel).
3. On a second device (like a laptop), turn on Bluetooth and find the headphones in the list.
4. Confirm the connection. Now the headset will automatically switch between devices depending on which one plays the sound.

If your headphones do not support multipoint, you can use an alternative method:

• 📱 Manual Switch: Disconnect the headphones from one device and connect to another via the Bluetooth menu.
• 🔄 Management apps: For example, SoundAssistant (available on Google Play) allows you to quickly switch between audio devices.

💡

If you switch between devices frequently, give your headphones a memorable name in your Bluetooth settings. LE_BT_1234 Call them My AirDots.

6.Sound optimization: how to improve the quality of playback

The Redmi 9C doesn't support advanced audio codecs, but even with basic settings, you can get better sound.

• 🎛️ Turn on the equalizer: Go to Settings → Sound and vibration → Equalizer and select the appropriate preset (e.g. Bass or Jazz).
• 🔊 Turn off audio compression: In the developer settings (Settings) → The phone. → Version. MIUI, tap 7 times) find the option to turn off the absolute volume of Bluetooth.
• 🎧 Use third-party players: Apps like Poweramp or Neutron Music Player offer more flexible audio settings than a standard player MIUI.

For owners of headphones with active noise cancellation (ANC), it is recommended:

• 🔇 Update the firmware of the headset: For example, for Xiaomi AirDots 3 Pro use the Mi Home app.
• 🎵 Set the level. ANC: In some models (such as Sony) WH-1000XM4) You can adjust the intensity of noise reduction through a proprietary application.

💡

For better audio in games, turn on Low Latency in Bluetooth settings.This will reduce the lag between video and audio, but may slightly degrade the sound quality.

7. How to disable or remove headphones from the list of devices

If you no longer plan to use the headset or want to connect it to another device, remove the headphones from the list of associated devices:

1. Open Settings → Connections and Sharing → Bluetooth.
2. Find the name of your headphones in the list and tap the gear next to them.
3. Select Forget the device (or Disable if you want to temporarily break the connection).

If the headphones do not turn off or continue to automatically connect:

• 🔄 Reboot Bluetooth module: Turn off Bluetooth on your phone, wait 10 seconds and turn on again.
• 📱 Reset network settings: This will delete all stored Bluetooth devices. → System and device → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth.
• 🔧 Update headphone software: For example, for Xiaomi AirDots, use the Mi Home app.

FAQ: Frequent questions about connecting headphones to the Redmi 9C