Include the second speaker on Xiaomi Redmi 7A: real ways and myths

Xiaomi Redmi 7A is a budget smartphone with a single speaker, but many users dream of stereo sound. There is a lot of conflicting information on the Internet: from “just update the firmware” to “re-drink contacts.” We figured out what is true and what is marketing fraud, and we collected all the working methods to improve the sound on your device.

It's important to understand that the Redmi 7A is only physically equipped with one multimedia speaker (located at the bottom of the case). The second speaker connector on the top panel is a conversation speaker (earpiece), which is not designed to play music or video. However, there are ways to make it work in tandem with the main one, with limitations.

• 🔍 How to check if your device has a second speaker (spoiler: no, but there are alternatives)
• ⚙️ Software methods of activating stereo sound through settings MIUI and engineering menu
• 🛠️ Hardware modifications (for experienced users)
• 🎧 Alternative Sound Improvement Solutions Without Risk of Daming Your Phone

1. Checking hardware capabilities of Redmi 7A

Before you try to turn on the "second speaker," make sure you correctly identify the body elements. on Redmi 7A:

• 🔊 Main speaker - is located to the right of the Micro-USB connector, plays music, notification sounds and calls.
• 📞 Talk speaker – a small hole above the screen, used only for voice calls.
• 🚫 There is no second multimedia speaker (unlike the Redmi Note 8 Pro or the Redmi Note 8 Pro). POCO X3).

To finally dispel the myths, look at the technical specifications:

The Redmi 7A's speaker isn't physically capable of producing low frequencies and loud sound -- it's powered to voice calls at its maximum -- but it can be made to work in parallel with the main speaker, but it's quiet and distorted. If you want real stereo, consider buying external speakers or headphones.

2. Software methods of activation of "stereosound"

If you're ready to experiment, try these ways. They won't turn the Redmi 7A into an audio system, but they can slightly improve the sound scene.

Incorporation through the engineering menu

This method makes the speaker work together with the main speaker, but the sound will be quiet and non-synchronous.

Turn off Bluetooth and headphones

Charge your phone at least 50%

Make a backup copy of the data

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1. Open the Phone app and enter the combination: ##36446337###
2. Select Hardware Testing → Audio → LoudSpeaker Mode.
3. Turn on the Dual Speaker option (if available). Redmi 7A may not have this option, then move on to the next method.
4. Reboot the phone.

⚠️

Warning: Once this mode is activated, the speaker will be used to play music, but its resource will be reduced, and with prolonged use, overheating or distortion of the sound may occur.

Configure via MIUI Lab (Hidden Functions)

Some versions of MIUI have experimental features for sound, to enable them:

1. Go to Settings. → The phone.
2. Click 7 times on the MIUI version to activate the developer mode.
3. Return to Settings → Additional → Special features → MIUI Lab.
4. Find the option of Enhanced Sound or Dual Channel Output and turn it on.

The effect will be minimal, but in some cases the sound becomes slightly larger due to the use of a conversational speaker for high frequencies.

💡

If the sound has become worse after the changes, reset the sound settings to the factory: Settings → Sound → Resetting settings.

3. Hardware modifications (for advanced users)

These methods require disassembling the phone and can lead to a loss of warranty or a failure of the device, and we describe them only for reference.

Connecting an external speaker to the earpiece connector

Theoretically, you can sell the second speaker to the contacts of the conversational, but for this you need:

• 🔧 Disassemble the phone (risk of damage to plumes).
• 🎛️ Find on the board contacts of the conversational speaker (usually marked as SPK_P/N).
• 🔊 Connect a miniature speaker with 8 ohms resistance (for example, from an old phone).

On the Redmi 7A, there is no room for the second speaker in the case - it will have to be mounted outside or cut a hole, which will violate the dust protection.

Replacement of the speaker with a more powerful speaker

You can install a speaker from another model (for example, from the Redmi Note 5), but:

• ⚠️ You will need to re-flash for proper work.
• ⚠️ There may be an imbalance in sound (one speaker will be louder than the other).
• ⚠️ The guarantee will be lost.

4.Alternative ways to improve sound without risk

If you want quality sound but aren’t ready to take your phone apart, try these methods:

4.1.Use of Bluetooth speakers or headphones

The most reliable way to get stereo sound is to connect external devices:

• 🎧 Headphones (wired or Bluetooth) – will give a real stereo effect.
• 🔊 Portable speakers (e.g. Xiaomi Mi Portable Speaker) – improve volume and sound quality.
• 🎵 Bluetooth 5.0-enabled sound bar for home use.

Set up the equalizer in MIUI

The built-in equalizer will help improve the sound through the main speaker:

1. Open the settings → Sound → Equator.
2. Choose Preset Bass or Rock for a more saturated sound.
3. Manually increase the sliders by 60 Hz and 250 Hz to enhance the low frequencies.

You can also install third-party apps, such as Wavelet or ViPER4Android (requires Magisk to work properly).

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The best way to get stereo on the Redmi 7A is to use external devices, and internal modifications are minimal and risk ruining the phone.

5. Frequent mistakes and how to avoid them

Many users have trouble trying to activate the second speaker, and these are the most common mistakes:

5.1 Try to turn on stereo sound through Bluetooth settings

Dual Audio option in Settings → Bluetooth is designed to connect two Bluetooth devices (like two speakers) at the same time, rather than activating a second speaker on a phone.

5.2 Install incompatible firmware

Some craftsmen advise stitching the Redmi 7A with firmware from Redmi Note 7 or POCO, promising stereo sound.

• 🚨 Poose. IMEI (The phone stops catching the network).
• 🚨 Continuous reboots.
• 🚨 Non-functioning sensors.

⚠️

Warning: Another firmware model could permanently disable the camera module or touch screen, costing 30 to 50 percent of the phone's cost to recover.

Use applications to “enable the second speaker”

There are dozens of apps on Google Play, like Dual Speaker or Stereo Sound.

• 🛑 They don't work for Redmi. 7A (It requires two physical speakers).
• 🛑 They may contain malicious code (especially if requested). ADMIN rights).
• 🛑 Take up memory and discharge the battery.

6. Comparison of Methods: What Really Works

We tested all of the methods described on the Redmi 7A with MIUI 12.5 firmware.

The bottom line is that the only safe way to get sound quality is to use external devices, and all other methods either have minimal effect or carry risks.

FAQ: Answers to Frequent Questions