Connecting wireless headphones to Xiaomi Redmi 9 Pro: a complete guide with photos and tips

Wireless headphones have become an integral part of modern life — they are convenient for sports, work and listening to music without tangled wires. Owners of Xiaomi Redmi 9 Pro often face questions: how to properly sync the headset with your phone, why the device does not find the headphones or the sound is interrupted?

We’ll look at not only the standard Bluetooth pairing procedure, but also the features of working with popular headphone models (for example, Xiaomi AirDots or JBL Tune 125TWS), and also give tips on audio optimization. If you first connect the headset or want to reconnect it after resetting, here you will find all the answers to all the questions.

Preparation for connection: what to check before pairing

Before you start connecting, make sure both devices are ready to go. Let’s start with the Xiaomi Redmi 9 Pro:

• 🔋 Battery charge: Phone should have a charge level of at least 20%.In low charge, the system can automatically turn off Bluetooth to save energy.
• 📱 Version. MIUI: Update your firmware to the latest stable version (check in Settings) → The phone. → System updates) Old versions MIUI They may have bugs with headphones.
• 🎧 Headphone compatibility: Make sure your model supports profiles A2DP (for streaming music; and HFP (Most modern headsets are compatible, but cheap no-name models may not work properly.

Now on the headphones:

• 🔋 Charge of case and headphones: Put the headphones in the case for 10-15 seconds if they are discharged. The indicator on the case should flash or burn (depending on the model).
• 🔄 Pair mode: Most headphones activate it with a long press on the power button (3-5 seconds) before flashing the indicator in blue/white. For AirDots Pro – press the button on the case.
• 📦 Reset: If the headphones have already been connected to another device, reset their settings (usually by pressing the button for 10-15 seconds before changing the color of the indicator to red / purple).

⚠️ Note: If your headphones support aptX codecs or LDAC, but the phone doesn't see them - check if the option is enabled Enable the aptX codec in Settings → Bluetooth → On the Redmi 9 Pro, this option is available only on the MIUI 12.5 and newer.

Also, consider the environment: severe interference from other wireless devices (such as 2.4GHz Wi-Fi routers) can interfere with pairing. Try turning off your phone's Wi-Fi or move to another location.

Standard Bluetooth connection: step-by-step instructions

The most common way to sync is through the Bluetooth menu in your phone settings.

1. Open Bluetooth settings: Go to Settings → Connections & Sharing → Bluetooth (or swipe down from the top edge of the screen and hold the Bluetooth icon).
2. Activate Bluetooth: Switch the slider to the "On" position. The phone will start scanning the available devices.
3. Transform the headphones to pairing mode: For Xiaomi AirDots: take the headphones out of the case and press the touchpad on both headphones for 3 seconds. For JBL/Sony, it is usually enough to hold the power button until the indicator flashes.

Select headphones in the list

Mi True Wireless Earbuds Basic 2

Confirm the connection.

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Once successfully connected, the headphones will be marked “Connected” next to the name, and in some cases, the phone may request permission to access contacts and call history, which is necessary for the Hands-Free (HF) function to work properly.

If the headphones don’t appear on the list, try:

• 🔄 Reboot the phone and headphones.
• 📱 Turn off/enable Bluetooth on your phone.
• 🎧 Remove the headphones from the case and put them back (for models with autopairing).

Features of connecting popular models of headphones

Different manufacturers do the pairing process differently, and let's look at the nuances for the most common brands.

There’s an additional feature for Xiaomi headphones: if you’ve already connected them to another device on the same Mi Account, the phone can offer a quick connection via Mi Pop-up notification. This only works when data sync is enabled in your Xiaomi account.

If you use active noise cancellation (ANC) headphones, note that the Redmi 9 Pro may not work as smoothly due to the limitations of the Snapdragon 720G chipset. Try disabling the ANC in the headphone settings (if there is such an app) or use them in Transparency mode.

Problem Solving: Headphones are not connected or turned off

Even with the right pairing, you can have failures, and here are the most common problems and ways to solve them:

Problem 1: The phone can't see the headphones

• 🔍 Check the visibility of the headphones: Make sure they are in pairing mode (the indicator flashes quickly).
• 📱 Clear the Bluetooth cache: Go to Settings → Annexes → Application management → Three points. → Show system-based → Bluetooth, then click “Clear the cache».
• 🔄 Reset network settings: In Settings → Connections and sharing → Resetting Wi-Fi, Mobile Network and Bluetooth.

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

• 🔊 Check the volume: On some headphones (for example, JBL) There is a separate volume control on the body.
• 🎵 Select headphones as the output device: While playing music, tap the speaker icon in the notification panel and select your headset.
• 🔧 Disable other audio devices: Sometimes the phone tries to output sound to a speaker or other connected device.

Issue 3: Persistent communication breakdowns

• 📶 Reduce distance: Maximum stable distance for Bluetooth 5.0 is about 10 meters without obstacles.
• 🔋 Check headphone charge: At levels below 15%, there may be interruptions.
• 🛜 Turn off Wi-Fi: If the router is running at 2.4GHz, it may cause interference.Switch the router to 5GHz or turn off the Wi-Fi on the phone.

⚠️ Note: If Xiaomi AirDots headphones only connect in mono mode (one earphone works), try resetting them: put both earphones in the case, then press the button on the case for 20 seconds before flashing red light.

If neither of these methods worked, try connecting the headphones to another device (like a laptop or tablet) and if the problem recurs, it's a malfunction in the headphones themselves.

Optimizing Sound: Settings for Better Quality

After successful connection, you can improve the sound with the built-in MIUI tools:

1. Select the codec: Go to Settings → Bluetooth → Settings (cog next to the headphones) → Audio codec. For music, choose aptX or AAC (the latter is better for Apple AirPods). For conversations, leave SBC - it provides minimal delays.
2. Set up the equalizer: Open the Music app (or any other player) and tap the equalizer icon (usually in the top right corner) and select a preset (Bas, Rock, Jazz) or create your profile.

Mi Sound Enhancer

• Some versions of MIUI have the option to improve the sound: Settings → Sound → Sound Improvement.
• Activate it to more accurately reproduce high and low frequencies.

On the Redmi 9 Pro, you can experience increased battery consumption (up to 15% per hour of listening to music) when using the LDAC codec. If autonomy is more important than sound quality, switch to the AAC codec.

For fans of podcasts or audiobooks, it is useful to turn off the effects of surround sound, as they can distort the voice.

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If you often listen to music in subways or noisy places, turn on Adaptive Sound in your headphone settings (if supported), which automatically adjusts the volume depending on the level of external noise.

How to connect headphones to several devices at the same time

Many modern headphones (such as the Sony WF-1000XM4 or JBL Live 660NC) support multipoint, which allows you to connect to two devices at once. On the Redmi 9 Pro, this feature works with limitations:

1. Check multipoint support: Open the headphone manual or search the web for a model. Not all budget headphones support this feature.
2. Connect the first device: Connect the headphones to the phone as usual (instruction above).
3. Connect the second device: Activate pairing mode on the headphones (usually double pressing the power button). Connect them to a second device (for example, a laptop).

Switching between devices

• On most headphones, the switching happens automatically when you play the sound on one of the devices.
• If you need to force switch, turn off Bluetooth on your current device.

The Redmi 9 Pro has a nuance: when you are active, you can experience audio delays (up to 0.5 seconds) when watching video. 720G. Decision:

• Turn off multipoint in the headphone settings (if there is such an option).
• Use headphones with only one device for critical tasks (such as gaming).

⚠️ Note: Xiaomi AirDots 3 Pro headphones support multipoint, but when connected to two Xiaomi devices at the same time (for example, a phone). + There may be conflicts, in which case, turn off Quick Pair in Bluetooth settings on one of the devices.

Security and Privacy: What You Need to Know

When connecting wireless headphones, many users don’t think about the security risks, but Bluetooth devices can be targeted by attacks:

• 🔒 Turn off Bluetooth when not in use: This reduces the risk of connecting third-party devices and saves battery life.
• 👤 Customize visibility: In Bluetooth settings (Settings) → Bluetooth → Additionally, select the option “Visibility only for coupled devices».
• 🔄 Regularly update the firmware of the headphones: Manufacturers release patches to fix vulnerabilities. for example, for Xiaomi AirDots updates come through the Mi Home app.
• 📱 Check permissions: When you first connect, your phone may request access to contacts and call history.

Special attention should be paid to headphones that support voice assistants (for example, Google Assistant or Xiao AI), which by default can record voice commands even in the background, to turn off this feature:

1. Go to Settings → Applications → Application Management → Google (or Xiao AI).
2. Turn off the permission to access the microphone.

It's also worth remembering that cheap headphones from unknown brands can transmit data about your location or activity.

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Never connect headphones to public Bluetooth points (such as at cafes or airports) and attackers can use them to steal data or listen.

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