Where is the microphone in the phone. How to test a speaker on your phone?

How to find a microphone in your phone?

Today, Android, Windows and iOS mobile manufacturers are releasing smartphones with two or even three microphones. The main element is located in the bottom of the body, in order to best transmit what the user said to his interlocutor. The second one is at the top.

Setting up and checking microphones in Windows 10

  • Make sure the microphone is connected to your computer.
  • Select Start Settings System Sound.
  • Under Audio Settings, open Input Select input devices, then select the microphone or recording device you want to use.

What microphone is in the phone?

Today’s phones use three types of microphones. carbon, electronic, and electromechanical micros. The last option provides the most accurate and clear sound transmission, but it is not immune to breakage.

In the engineering menu, you need to go to Hardware, where you click on the subsection Earphones and Mic (or something similar). After that you should adjust the sensitivity of the microphone in the headphones in the subitem Speech Enhancement (until a normal sound level).

Types of microphones

Older cell phones used the following microphones:

Angle. the most popular option, which is currently outdated.

Electronic. with improved signal converter, characterized by a higher quality of perceived sound.

Advanced electronic microphone, which is most often installed in modern smartphones. Sound quality is affected by both the membrane and the body of the device.

Microphones can also be divided into two types:

Analog. a membrane that receives sound vibrations. Further conversion is performed by the sound module circuit of the device.

Digital. a complete module that performs not only the reception of audio signals, but also their digitization, processing.

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How to check if the conversational speaker works on the phone?

To test the talking speaker will use the phone simulation test, go to “Simulation Call Test” menu. Hold the phone to your ear as if you are talking to someone and start talking, you should hear yourself in the speaker.

How to turn on the sound in a Zoom conference in this case? Press once on the screen to display the toolbar at the bottom. Then click on the microphone icon on the left. The “Call with sound device” notification will appear.

How to properly set up a microphone for karaoke?

To adjust the microphone go to “Start” “Control Panel” and select the “Sounds and Audio Devices” tab. In the pop-up window, select the “Audio” tab. In the Audio Recording box with the microphone icon, go to the “Volume” box. In the window that appears, you can make fine adjustments to the sound.

How to listen to the sound from the computer’s microphone.

  • Control Panel. Select “Hardware and Sound
  • Control Panel. Hardware and Sound
  • Sound. Open the “Record” tab, the list of recording devices on your computer will appear (fig
  • Sound. Tab.
  • Microphone properties. Here open the “Listen” tab, a window like this will open (fig.

What to do if I can’t be heard on the phone?

Reasons why the microphone does not work on Android

Moisture inside the case. Shock, fall or other mechanical effect. Clogging. Unsuccessful cleaning with a needle/toothpick, damaging the microphone.

Microphone replacement

In order to replace the old microphone with a new one, the following instructions must be followed:

  • Desolder the old broken microphone using a soldering iron and a blade. If you look at the whole assembly from the side you can see the solder pins which need to be heated.
  • Now you need to put a flat blade under the microphone while heating all the legs. Next, simply separate the microphone from the chip, without much effort.
  • Examine the microphone for debris, clean it with alcohol and remove the “remnants” of the microphone. Now you need to prepare the pad on the chip in order to install the new microphone.
  • Using a soldering iron and solder, place the microphone on the vacated pad. If necessary, you can use old wires.
  • Now you need to lightly press the audio recording device against the board and solder the wires sticking out in all directions to the contact pads.
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Important! Soldering should be done quickly to avoid overheating.

Important! When the inside of the device is clean and serviceable, you can pay attention to its appearance. Read about the most effective ways in the following articles:

A dead microphone is diagnosed, as a rule, when the owner of the phone complains that no one can hear him or hear very badly. A detailed check may diagnose the following

The microphone does not work at all. There can be several reasons. One of the most common is a clogging of the sound channel in the phone body (users usually say: “I have a clogged hole there”)!). As a rule, over time, dirt, dust, and small foreign objects get into it. The microphone will talk again when the sound hole is cleaned. Some flawed flip phones have a sound channel in one of the rubber shock absorbers on the bottom of the phone that are designed to cushion the impact of closing the phone, as well as to protect the display from scratching against the keyboard. Over time, the material of these most shock absorbers becomes very soft and sticky. They simply flatten under the influence of the phone‘s cover and the given audio input is completely stuck. In this case, poking a hole gives a very short term result. This defect is typical, for example, for Samsung X450 phone. Bad plugs-amplifiers are replaced by new or similar from other phones, which fit the shape and have a hole. the sound tube.

Second common defect is oxidation of the microphone circuit. Can be near the microphone as well as in the system headset connector. Even small ones can still interfere with the microphone. Often it is enough to clean the oxide and the microphone begins to work. However, if the water got into the microphone itself, it will have to be replaced. Often, as a result of moisture in the phone does not work properly due to the elements of the bundling of microphone circuits. Especially it concerns such elements, as varistors and stabilitrons. Sometimes their removal is enough (with cleaning of oxide on other elements, of course). Oxides also like to hide under EMIF-filters (Electromagnetic Impulse Filter), which quickly deteriorate under the influence of moisture or simply fail without any external influences. In such cases you have to replace EMI filter.

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It happens that the phone indicates a connected headset, when in fact it is not connected. In this case, usually along with a microphone does not work and the conversational speaker. The reason for this is the same oxides due to moisture in the system connector or under the glass EMIF-filter, as well as the headset connection identification circuit (in different phones are implemented differently, but usually through the contact group of the headset jack). Sometimes the very same headset identification circuit has been broken as a result of BGA soldering on the controller/processor.

Faulty microphone is checked by replacing it with a known working one.