Bluetooth Page Scan on Xiaomi: what is this feature and why you need it

Have you ever noticed that your Xiaomi smartphone takes too long to search for headphones or a fitness bracelet over Bluetooth? or does the battery run out faster than usual when the wireless module is turned on? This may be due to a little-known Bluetooth Page Scan feature, a mechanism that directly affects device search speed and power consumption. In this article, we will look at what the term hides, how it works in firmware. MIUI HyperOS and why its setup can dramatically improve the experience of using Xiaomi, Redmi or other gadgets POCO.

We warn you right away: Page Scan is not another "secret mode" that can be enabled with one tap. It is a low-level Bluetooth protocol, and its parameters are usually hidden from the user. However, in some Xiaomi models (especially with Qualcomm or MediaTek chips of the latest generations), these settings can be adjusted through an engineering menu or third-party utilities.

What is Bluetooth Page Scan and how does it work?

Page Scan (or “page scanning”) is one of three key processes in the Bluetooth Classic protocol (along with Inquiry Scan and Connection) that is responsible for detecting devices in low power mode. Simply put, when your Xiaomi Buds headphones or Mi Band smartwatches are asleep, they periodically “wake up” to check if your smartphone is trying to find them. It is Page Scan that determines how often and how long this happens.

Technically, the process looks like this:

• 🔍 Inquiry Scan – A smartphone is actively looking for new devices (for example, when you turn on a search in Bluetooth settings).
• 📡 Page Scan – a device (earphones, bracelet) “listens” to the air, waiting for a signal from a smartphone to connect.
• 🔗 Connection – Establishing a stable communication channel after a successful handshake».

On Xiaomi smartphones, Page Scan parameters depend on:

• 📱 Versions MIUI/HyperOS (In new firmware algorithms optimized better).
• 🔋 Power saving mode (in Ultra mode scanning can be turned off completely).
• 🛠️ Hardware platform (Chips Qualcomm Snapdragon 8 Gen 2)+ Supports adaptive scanning).

⚠️ Note: Do not confuse Page Scan with Page Scan BLE Scan (Bluetooth Low Energy)! The first is used for classic devices (earphones, speakers), and the second is for gadgets with Bluetooth 4.0 support+ (On Xiaomi smartphones, these protocols work in parallel, but are configured independently.

Why you need Page Scan on Xiaomi: pros and cons

The main goal of Page Scan is to provide fast and reliable connection of devices without constant battery consumption, but in practice, Xiaomi users face two extremes:

For example, if you’re using a Xiaomi 13 Ultra smartphone with Buds 4 Pro headphones, Page Scan is set to balance the connection speed and power consumption by default. But if you’re plugging in an old Mi Portable Speaker Bluetooth speaker, you may need to increase the scan interval, otherwise the connection will be constantly breaking.

On the other hand, too frequent Page Scan (e.g., every 100ms) drains the smartphone battery 10-15% faster, especially on low-end Redmi models with small batteries (e.g., Redmi Note 12 with a capacity of 5000mAh).

How to check the current Page Scan settings on Xiaomi

Unfortunately, in the standard settings MIUI or HyperOS doesn't have direct access to Page Scan settings, but there are a few ways to get current status information:

1. Through the Engineering Menu (for advanced users): ##4636## → Service information → Here you will see the Page Scan Interval and Page Scan Window options (if supported by your chip). On most Xiaomi smartphones, these values are fixed and unedited.
2. Using diagnostic applications: 📱 Bluetooth Scanner (Shows Active Scanner). 🛠️ nRF Connect (for analysis) BLE and Classical connections). 📊 DevCheck (displays a version of the Bluetooth chip).

Through ADB-teams (requires PC):

adb shell dumpsys bluetooth_manager

In the conclusion, look for lines with scan_mode or discoverable_timeout.

For example, on Xiaomi. 12T Pro with Snapdragon 8 chip+ Gen 1 Page Scan Standards Look Like This:

• Page Scan Interval: 1280 ms (1.28 seconds)
• Page Scan Window: 11.25ms (time during which the device "listens" to the air).

⚠️ Note: Change Page Scan settings through the engineering menu or ADB This could lead to unstable Bluetooth operation or even a “brick” of the communication module. – Xiaomi smartphones with HyperOS (2026)+) These settings are often locked at the core level.

How to Optimize Page Scan for Battery Savings

If you notice that Bluetooth is draining your Xiaomi battery too quickly, try the following optimization methods:

1. Setting up the scanning interval (for root users):

If you have root access, you can change the settings of Page Scan through the file. /system/etc/bluetooth/bt_stack.conf. Look for lines:

PageScanInterval = 1280 # Value in ms (default 1.28c)


PageScanWindow = 11.25 #Times to listen to the airwaves

To save battery, increase PageScanInterval to 2560 (2.56 s), but note that connecting devices will take longer.

2.Use of the “Energy saving” mode:

V MIUI 14+ HyperOS has a separate switch for Bluetooth in the battery settings:

1. Go to Settings → Battery → Energy Saving Mode.
2. Select Bluetooth and set a limit on background activity.

3. disabling unnecessary profiles:

Some Bluetooth profiles (for example, HFP for hands-free or A2DP For streaming audio, you activate Page Scan even when you're not in use:

1. Go to Settings → Connections → Bluetooth.
2. Click on the gear next to the device and turn off unnecessary profiles (e.g. Calls if you only use music).

Update of firmware:

In the latest versions of HyperOS (starting with 1.0.23), Xiaomi optimized Page Scan algorithms for Snapdragon 8 Gen 3 and Dimensity 9200 chips.+. For example, on Xiaomi 14 Pro, scanning only occurs when you actively search for devices, not constantly.

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If your Xiaomi smartphone quickly discharges when Bluetooth is turned on, try temporarily turning off the Auto Connection feature in the device settings, which will prevent you from constantly trying to connect with previously paired gadgets.

Common Page Scan Problems on Xiaomi and Their Solutions

Xiaomi users often face the following issues related to Page Scan:

Example 1: Headphones Xiaomi Buds 3T Pros don't connect.

If your headphones are not defined by your smartphone, try:

1. Remove them from the list of associated devices.
2. Enable the search mode on the headphones (usually by holding the power button).
3. On your smartphone, go to Settings → System system → Reset → Resetting network settings.

Example 2: Mi Band 8 is permanently shut down

The problem is typical for fitness bracelets that are used BLE, But Page Scan of classic Bluetooth can interfere with the stability of the connection:

• Update the Mi Fitness app to the latest version.
• In bracelet settings, turn off call notifications (they use a profile). HFP, which activates the Page Scan).

Page Scan comparison on different Xiaomi models

Page Scan options depend on the hardware platform of the smartphone, and below is a comparison table for popular models:

For example, the Xiaomi 14 Ultra uses an adaptive algorithm that reduces the scan interval to 1024 ms if you often plug in your headphones, and increases to 2048 ms if you don’t use Bluetooth.

Here's to it. POCO F5 Snapdragon 7+ Gen 2 settings are fixed, which causes users to complain about a quick discharge when using Bluetooth actively. In this case, only turning off the module manually or switching to custom firmware with optimized settings will help.

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On Xiaomi smartphones from 2023 to 2026 (with HyperOS), Page Scan problems are less common due to adaptive algorithms, POCO) parameters are often fixed, which requires manual optimization.

FAQ: Frequent questions about Bluetooth Page Scan on Xiaomi