When you stop distinguishing between the words of the interlocutor during an important conversation or you have to constantly ask questions, many smartphone owners know. The problem when you can’t hear Xiaomi Redmi can arise suddenly or develop gradually, turning the use of the gadget into a continuous inconvenience. Most often the reason lies in the banal contamination of the talk speaker grid, but software failures or hardware malfunctions can also not be excluded.
Before you take your device to the service center, you need to do a series of self-diagnostic activities. Modern smartphones in the line of Redmi and Xiaomi are equipped with complex noise reduction algorithms that sometimes work incorrectly. Understanding how your device's audio codec works will help you find the root of the problem faster. In most cases, you can restore normal volume without cost, if you act consistently.
In this article, we will look at all possible scenarios, from simple cleaning to deep system tuning, how to check the microphone and main speaker, and what hidden MIUI features can affect the transmission of sound. It is important not to panic if the sound is lost abruptly, as this is often solved by simply restarting or updating drivers.
The first step is always to make an accurate diagnosis to understand which part of the system has failed. On Xiaomi smartphones, different modules are responsible for the sound reproduction: The main multimedia speaker, the speaker (auditory) and the vibrator, which is sometimes mistaken for the source of sound, must be clearly defined at what point the sound disappears or quiets: only during calls, listening to music or in instant messengers. 📊 In what situation is the sound the quietest?Only during calls When watching videos In games and messengers Sound is completely gone To check the performance of all audio components in the shell MIUI There's a built-in engineering menu. You can run an automatic hardware test that shows the actual state of the audio track. If the test shows an error, the problem is probably hardware. If the test is successful, it's software or settings. How do you run the speaker test?Take the code ##6484## to log into the engineering menu.Select Speaker to check the main speaker and Receiver to check the spoken speaker. Follow the instructions on the screen.
The most common reason Xiaomi Redmi is hard to hear is the elementary dusting of the speaker grid, and during operation, dust, pile from clothes, skin fat and even small particles of metal penetrate the holes. Over time, this plaque is compressed and forms a dense plug that physically blocks the passage of sound waves. 💡Use a soft toothbrush or sticky tape (scotch) to delicately clean the speaker mesh. Don't use sharp objects to avoid damaging the membrane. To clean effectively, you'll need a dry toothbrush with soft bristles, isopropyl alcohol (90% and above), and possibly dental floss. In no case do not pour liquid directly on the speaker, as moisture can get inside the case and cause corrosion of contacts. Wet the brush with a minimum amount of alcohol and neat sweeping movements walk along the grid. ☑️ Cleaning speaker Remove the protective glass Wipe the body with alcohol Clean the net with a brush Blow with compressed air Check sound: 0 / 5 If the contamination is very high, you can use the Scotch method, stick a piece of sticky tape on the net, press it tightly and pull it sharply, repeat the procedure several times, each time changing the section of the tape, and this method perfectly pulls out surface dust that you can't see. After cleaning, be sure to check the sound by calling someone or turning on a recorder.
Set up sound profiles and noise reduction MIUI It has advanced audio tuning capabilities that often cause a quiet speaker to speak, and it can misinterpret the environment and suppress background noise too aggressively, cutting off the voice frequencies of the other person. This is especially true for models with Dolby Atmos or Hi-Res Audio technology. 💡Aggressive noise cancellation is a common cause of quiet noise in noisy places. Try turning it off in the call settings. Check the equalizer and sound effects settings. Go to the Settings menu. → Sound and vibration → Sound effects. Here you can activate a silent or night profile that limits the maximum volume. It's also worth experimenting with the speaker mode: sometimes switching from "Ordinary" to "External" or vice versa helps to bypass the software bug. Special attention should be paid to the function "Improving sound during conversation." In some versions of the firmware, this algorithm works incorrectly, making the voice of the interlocutor deaf and quiet. Try to deactivate all the additional improvements in the phone settings and check if the situation changes. Resetting the sound settings to factory values can also help.
Software glitches and system updates If physical cleaning didn't help, it's likely the problem lies in the software. MIUI They are periodically exposed to bugs that affect the operation of sound drivers, especially after a failed update or installation of applications that conflict with system processes. Why can sound disappear after an update?The new version of the software may contain errors in the audio driver code or incorrectly calibrate the volume. In such cases, waiting for a patch or a system rollback helps. The first thing to do is check for updates. Go to Settings → The phone. → Version. MIUI And press the update check button, and if you have a new version, install it, because developers often release hotfixes to fix known sound problems. If the problem appears immediately after the update, clear the cache of system applications. To do this, go to Settings → Apps → All apps, find the Phone and Contacts app. Select the Clear option and click Clear Cache (not data unless you want to lose your call history, although the history is stored in akka ACCOUNT). It is also worth checking whether the Do Not Disturb or In Your Pocket mode is enabled, which can lock the speaker when approaching your face.
Understanding the technical features of your model helps you realistically estimate the volume of sound. Budget models often come with less powerful speakers than the flagships of the Mi or Xiaomi series. The table below compares the typical characteristics of the talking speakers in different price segments of the Redmi line. Model / Series Dynamic Type Max. Volume (dB) Features Redmi Note (budget) Mono, standard 75-80 DB Prone to Pollution Redmi Pro/Prime Enhanced Mono 80-85 Best noise cancellation Xiaomi (Flagship) Stereo / Harman Kardon 85-90+ dB High Detail Redmi (Old Models) Mono 70-75 As you can see from the table, the volume expectations should be consistent with the class of the device. If you have a budget model, the sound may be just physically quieter than on an expensive smartphone. However, if the volume has dropped well below the stated specs for your model, it is cause for concern.
When all previous methods are exhausted, it remains to perform a complete factory reset, which will delete all user data, applications and settings, returning the phone to a “store-like” state. This is the most effective way to eliminate software conflicts that may have accumulated over the years of use. 💡Before reset, make sure to back up all important data to the Mi Cloud or your computer. Photos and contacts will be deleted. Before resetting, make sure that the battery is at least 50%. → The phone. → Resetting settings → Erase all the data. The system will alert you to the consequences. Once you reboot, the phone will be clean. Even if on a clean system without installed third-party applications, the sound remains silent, the probability of hardware failure is 99%. ☑️ Preparation for reset Charge the phone > 50%Make a data backup Leave the Mi Account Extract SIM and memory card Perform reset Completed: 0 / 5
Hardware malfunctions and repairs If software methods have not helped, the problem is "in the hardware." The most common hardware cause is wear or damage to the membrane of the speaker. Over time, the material from which the speaker is made loses its properties, cracks or peels off the body, which leads to loss of tightness and volume reduction. Also, the problem may be the plume connecting the lower board to the motherboard. In Xiaomi smartphones, this plume often passes through the entire body and can move away from contact when the speaker falls. Another possible reason is the audio code malfunction in the mainland, which requires a professional diagnostic service at the handkerchief center.
In situations where repair is impossible or delayed, and you need to call urgently, you can use alternative methods of communication. Connecting a Bluetooth headset or wired headphones to a microphone will completely redirect the audio stream, bypassing a faulty phone speaker. 💡Using a headset is the best temporary crutch for a speaker breakage, and the sound will be transmitted directly, bypassing the problem module of the phone, and it is worth considering the use of hands-free communication. The main multimedia speaker, usually located at the bottom or top (depending on the model), often remains in service even when the conversation breaks. Turn on speaker when talking at home or in the car so that you can be heard well and you hear the interlocutor. Why does sound appear and disappear during a conversation? This can be a sign of poor contact of the speaker plume or software failure in the communication module. Also the cause can be a weak network signal, which is why the codec tries to compensate for the loss of packets by distorting the sound. Can the volume increase through the engineering menu? Yes, in the engineering menu (code #3646633#) there is an Audio section where you can adjust the gain levels (Gain) for different scenarios. However, inexperienced users it is better not to change these values so as not to damage the speaker. Does the protective glass affect the sound? Poor security glass that covers the opening of the conversational speaker? Yes, there is a loud speaker that can help with dirt, if you use it, if you can reduce the cut, or make sure that the speaker is dirty. If the wheezing inside - only a replacement module will help.