What version of Bluetooth is in Xiaomi Redmi Note 7: technical details and verification

Xiaomi Redmi Note 7 is still one of the most popular budget smartphones, despite the release of newer models. owners of this device often face the question: what version of Bluetooth is installed in their device? This depends on compatibility with wireless headphones, speakers, fitness bracelets and even automotive systems. In this article, we will understand which Bluetooth modules were used in different versions of the Redmi Note 7, how to independently check the version and what to do if you have problems with connection.

Note: Bluetooth version information in Redmi Note 7 can vary depending on regional firmware and hardware revision. Official data from Xiaomi is not always clear, and there are conflicting reports on the network. We have collected current data for 2026, including ways to verify and solve typical problems.

The official specifications: what Xiaomi says

According to Xiaomi’s official website, the Redmi Note 7 is equipped with a Bluetooth 5.0 module. However, there is an important caveat: some regional versions (for example, for India or China) could use chips that support Bluetooth 4.2. This is due to the optimization of the cost of the device for different markets.

Why is that happening? The Redmi Note 7 came with two types of processors:

• 🔹 Qualcomm Snapdragon 660 (global version) – supports Bluetooth 5.0;
• 🔹 Qualcomm Snapdragon 636 (regional modifications) – limited to Bluetooth 4.2.

So the exact version of Bluetooth depends on the specific hardware revision of your smartphone, so you'd better check it yourself, as we'll talk about later.

How to check the Bluetooth version of Redmi Note 7

There are several reliable ways to know the Bluetooth version on your device, and we recommend using them consistently to get an accurate result.

Method 1: Through Android Settings

The easiest way is to look at the information in the settings menu:

1. Open the settings → About the phone;
2. Find the item All characteristics or information about the software;
3. Scroll down to the Bluetooth section – the version should be listed there.

If the version does not appear, proceed to the next method.

Method 2: Using the Engineering Menu

A more accurate method is the use of a hidden engineering menu:

1. Open the phone application;
2. Enter the combination: ##4636##;
3. In the menu that opens, select Phone Information;
4. Scroll to the Bluetooth block, and the protocol version will be specified there.

⚠️ Note: Some firmware may have the engineering menu blocked, in which case use third-party apps such as DevCheck or AIDA64.

Method 3: Through Third Party Applications

Apps like DevCheck or AIDA64 provide detailed information about the hardware of the smartphone:

• 📱 Install DevCheck from Google Play;
• 🔍 Open the Hardware tab;
• 📋 Find the Bluetooth section, which will show the version and supported profiles (A2DP, HFP etc.).

These apps will also show a model of the Bluetooth chip, which will help to more accurately determine its capabilities.

Table: Comparison of Bluetooth 4.2 and 5.0 in Redmi Note 7

If you are still in doubt which version is better, compare their key characteristics:

As you can see from the table, Bluetooth 5.0 provides significant benefits, especially if you use wireless headphones or smart gadgets, but even Bluetooth 4.2 is enough for basic tasks - calling, transferring files or connecting to a car radio.

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If your Redmi Note 7 supports Bluetooth 5.0, you’ll be able to connect two devices at once (like headphones and a fitness bracelet) without losing quality.

Typical Bluetooth issues on Redmi Note 7 and their solutions

Even if your smartphone supports Bluetooth 5.0, there may be connectivity or connectivity issues, and let’s look at the most common ones and how to fix them.

Problem 1: The device does not find the headphones / column

If Redmi Note 7 doesn’t see your Bluetooth device:

• 🔄 Reboot both devices;
• 📱 Make sure the headphones/column are in search mode (usually you need to hold the on button to do this). 5-10 seconds);
• 🚫 Check if the device is connected to another smartphone;
• 🔧 Reset network settings: Settings → System system → Reset → Resetting Wi-Fi, Mobile Network and Bluetooth.

Problem 2: Constant communication breakdowns

If the connection is interrupted every few minutes:

• 📶 Check if there are any sources of interference nearby (microwaves, other Bluetooth devices);
• 🔋 Make sure there is enough charge on the headphones/column;
• 📲 Update your smartphone to the latest version;
• 🔄 Try to “forget” the device and reconnect it.

⚠️ Attention: On some firmware MIUI There's a bug that causes Bluetooth to shut down when you lock your screen, and the solution is to turn off Bluetooth battery optimization in your auto-start settings.

Problem 3: Low quality of sound (cracking, stuttering)

If the sound is interrupted or distorted:

• 🎧 Try using a different audio codec (for example, AAC instead SBC);
• 📴 Disable other connected Bluetooth devices;
• 🔊 Check if the energy saving mode is on;
• 📱 Install Bluetooth Auto Connect to stabilize the connection.

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If you use wireless headphones that support aptX, but the sound is still bad, try manually selecting the SBC codec in the Bluetooth codec settings (root or special software is required).

Can I upgrade Bluetooth to Redmi Note 7 to 5.0?

This question is often asked by owners of Bluetooth 4.2 devices. Unfortunately, hardware upgrades to the Bluetooth module are not possible - the version of the protocol is determined by the chip soldered into the motherboard.

• 🔄 Update the firmware to the latest version MIUI (Sometimes the manufacturer optimizes the drivers);
• 📱 Install custom firmware (e.g. Pixel Experience or LineageOS) where Bluetooth support can be improved;
• 🔧 Use an external Bluetooth adapter (via the OTG), 5.0 Support is critical.

⚠️ Attention: Installation of custom firmware can lead to loss of warranty and unstable operation of the device!

If you really need Bluetooth 5.0, it’s worth considering buying a newer smartphone, like the Redmi Note 10 or POCO X3, where this version is supported at the hardware level.

Redmi Note 7 Compatible with Popular Bluetooth Devices

Even with Bluetooth 4.2, the Redmi Note 7 is able to work with most modern gadgets, but there are nuances.

• 🎧 Wireless headphones: 🔹 AirPods (all generations) – work but without spatial sound support; 🔹 Sony WH-1000XM4 — Full compatibility, but may not be supported LDAC; 🔹 Xiaomi Mi True Wireless Earbuds – Optimized for the best MIUI, work consistently.
• 🚗 Automotive systems: 🔹 Support for hands-free (HFP) It is available in both versions of Bluetooth; 🔹 To transmit music (A2DP) You may need to update the tape recorder.
• ⌚ Smart watches and bracelets: 🔹 Mi Band 4/5/6 — work without problems; 🔹 Apple Watch – limited functionality (no notifications); 🔹 Amazfit GTR — full compatibility.

If you are planning to buy a new Bluetooth device, look at the profiles it supports, for example, A2DP (sound transfer) and AVRCP (playback control) are important for headphones, and for fitness bracelets – (headset) and (sensors).

Frequently Asked Questions (FAQ)