Use your mobile phone as an external microphone It's become a favorite trick for those who record videos, stream live, teach online, or simply want their voice to sound better without spending a fortune on professional equipment. The great thing is that, with a couple of apps and a little know-how, you can get a lot out of both your main phone and that old phone you have tucked away in a drawer.
In the following lines you will see All the practical ways to turn a mobile phone into a microphoneUsing native Android and iPhone apps, recording with the camera, connecting external microphones by cable or Bluetooth, taking advantage of specific microphone applications and, of course, with recording and editing tricks to make the result sound as professional as possible.
Use native mobile apps as a microphone and recorder
Most current smartphones come with a built-in audio recording app that allows Use your mobile phone as a microphone without installing anything extra.Not all manufacturers include the same thing, but there's almost always a pretty decent built-in solution to get you by.
On many Android phones you will find the manufacturer's own recorderwhich often comes with names like "Recorder" or "Voice Recorder". Brands like Samsung include their own voice note app, in their case Samsung Voice Recorderwhich is one of the most complete options for recording audio directly from your phone and using it as a microphone for interviews, classes, or quick notes.
On other Android devices, especially those with a stock Android experience, the default app is usually the Google RecorderThis app allows you to easily record audio with good quality and, on some models, even add automatic transcription. If your phone doesn't have it installed, you can go to Google Play and Download the Recorder app for free to start using your phone as a microphone in seconds.
In the Apple ecosystem, all iPhones include the app. Voice noteswhich comes pre-installed and is designed precisely for this: quickly recording audio, storing tracks, and sharing them later. If you ever deleted it, you can Download Voice Memos again from the App Store at no cost and instantly regain the ability to record good quality sound using the iPhone microphone.
With any of these native apps, the process is very similar: you open the app, press the record button, and let the device act as the recorder. Portable microphone to record your voice or any soundThen you can send those files to your computer, share them, edit them, or sync them with your videos.
Turn your mobile phone camera into a “video microphone”
Don't forget that your smartphone's camera is also a powerful tool for Capture audio quickly and easilyEvery time you record a video, in addition to the image, the sound of the environment is captured with the integrated microphone, and often with a higher quality than that of old Dictaphones.
If you're interested in recording a talk, a presentation, or a musical rehearsal, you can open the camera app, select video mode, and use your phone as if it were a camera. a microphone that also records imagesLater, you will always have the option to extract only the audio to keep a sound file without needing to keep the video.
To separate the sound track, you can use video or audio editing apps You can edit it directly on your phone or transfer the file to your computer and use more advanced software. The typical procedure involves importing the video into an editing app and exporting only the audio in MP3, WAV, or a similar format, thus converting what was a video clip into... a separate voice recording.
Use your old phone as an external microphone for another phone
A very specific and frequent case is that of those who have two Android phones And they want to reuse the old one as an external microphone for the new one, for example, using an old OnePlus as a microphone and a Samsung Galaxy S23 as the main camera to record video.
The simplest, though somewhat manual, way is to Record the audio on the old phone and the video on the new one and then synchronize both tracks in editing. For this you can use the typical homemade click track: clap your hands at the beginning of the recording so that the peak of the sound serves as a reference, and, when editing, align the waveform of the clap in both files.
If you want the sound from your old phone to reach your new one in real time, there are apps that turn your phone into a wireless microphone via WiFi, Bluetooth, or even by connecting it to a computer as if it were an external microphone. One of the best-known methods is WO Micwhich allows you to use your smartphone as a microphone for your PC and, through different configurations, integrate it into your recording or streaming workflow.
Although not all Android camera apps directly support another mobile device acting as an audio input via Bluetooth or WiFi, it is possible to combine tools: for example, Use a wireless microphone app to send the audio to your computer. and record the video with a phone connected to the PC or then synchronize the sound from the mobile phone acting as a microphone with the video recorded on the other device.
Connect external microphones to your mobile phone: cable, USB-C and Bluetooth
If you want to raise the quality level, the ideal thing to do is Add a specific external microphone for your mobile phone.These microphones offer better sensitivity, less noise, and more directional pickup than the phone's built-in microphone, which makes a huge difference in podcasts, interviews, or outdoor recordings.
There are several types of microphones you can attach to your Android or iPhone: from lavalier microphones from handheld microphones for speeches to small condenser microphones for vlog-style videos. Before buying one, always check that be compatible with your mobile interface, whether it's a 3,5 mm jack, USB-C or, in the case of iPhone models prior to the 15 series, a Lightning connector.
Currently, the dominant standard is the USB-C on most Android phones and the latest iPhonesHowever, many models still have a 3,5 mm minijack port or, in Apple's pre-iPhone 15 lineup, Lightning connectors. This limits the type of microphone you can use directly or with adapters.
In addition to the physical cable, there are wireless microphones that connect via Bluetooth or via a small 2,4 GHz receiver that plugs into the phone. These systems are ideal for recording at a distance from the device without dangling cables, provided you ensure that the recording or video app recognizes that external audio input.
How to pair a Bluetooth microphone with your mobile phone
If you opt for a wireless microphone that connects via Bluetooth, the pairing process is quite simple. On Android, you usually go to Settings > Connected devices > Connection preferences > BluetoothActivate Bluetooth, put the microphone in pairing mode, and select it from the list of available devices.
On an iPhone, the process is similar: you enter Settings> BluetoothActivate the function, find the microphone's name in the list of nearby accessories, and pair it. From there, compatible apps should be able to use that external Bluetooth microphone as an audio source.
In the case of 2,4 GHz wireless systems with a receiver, it is enough to connect said receiver to the USB-C, Lightning or 3,5 mm jack port on the terminal Depending on the model, turn on the transmitter microphone and make sure both are paired. Many camera and recording apps automatically switch to that input when they detect the accessory.
Key steps to use an external microphone on Android
If you want to ensure your Android phone properly recognizes an external microphone, it's best to follow a sort of roadmap. That way, You avoid classic mistakes like buying an incompatible microphone or using the wrong adapter..
Check if your Android supports external audio input
The first thing is to confirm that your phone It actually accepts audio input through its port.Although most modern models with a 3,5 mm jack or USB-C allow it, there are exceptions, especially in very basic or old mobile phones.
To clear up any doubts, check the type of interface on your mobile phone, look at the manual or technical specifications, and see if It supports audio input and OTG function. (In the case of USB microphones). Some USB-C to headphone jack adapters only output audio to headphones and don't accept an input signal, so check those as well. If you encounter any problems, consult [a support team/resource]. my mobile's microphone doesn't work.
Choosing the right type of microphone
Once you've confirmed that your Android supports audio input, tap choose the external microphone that best fits With what you want to do: record close-up voice, interviews, music, live streams, etc. Among the most common options for mobile are:
- 3,5 mm microphones TRRS, which connect directly to the phone's compatible headphone jack.
- Micro USB-Cdesigned for mobile phones with this port and which usually require the phone to support OTG.
- Micro USB-A connected via a USB-C to USB-A OTG adapter if the smartphone supports it.
- XLR Microphoneswhich actually require an interface or adapter (sound card or XLR to 3,5mm/USB-C cable) to use them with a phone.
- Wireless systems via Bluetooth or 2,4 GHz with a specific receiver, very convenient if you need mobility.
Ideally, the microphone connector type should be match as closely as possible to your smartphone's input to rely on fewer adapters, since each additional adapter adds potential faults or interference.
Adapters and accessories required
If the microphone connector and the mobile phone connector don't match, you will need some intermediate adapterSome typical examples are:
- For a 3,5 mm microphone on a mobile phone with a jack: direct connection if the terminal supports TRRS or use of a TRS to TRRS adapter if the microphone is a camera type.
- For a 3,5mm microphone on a mobile phone with USB-C: USB-C to 3,5mm adapter that accepts audio input, not just output.
- For micro USB-A: USB-C to USB-A OTG adapterprovided the mobile phone has OTG support.
- For XLR microphones: sound card or XLR to 3,5 mm cable, and in some cases an additional USB-C to 3,5 mm adapter.
- For wireless systems: VRX receiver connected to the 3,5 mm jack or USB-Cor direct Bluetooth pairing if allowed.
Once you're clear on which adapters you need, the assembly is reduced to Connect microphone, adapter and mobile phone in a daisy chain And, generally, the system should recognize the new sound source.
Configure the recording app or camera
With the microphone now connected, the next step is Make sure that the app you're going to use picks up the signal from the external microphone. and not the phone's built-in microphone. Some apps detect it automatically, but others require you to specify it manually, and it's advisable Check microphone permissions.
In advanced camera apps like Open Room o FiLMiC ProYou can go into the settings, find the audio section, and explicitly select the external microphone or external audio inputThis is key if you want to ensure that the video is recorded with the voice from the microphone you just connected.
Before you start recording something important, do a short test and play the clip: if covering the external microphone with your hand noticeably changes the sound, you'll know that the input being used is the correct one and not the phone's internal one.
Specialized microphone apps for Android
Besides the native recorders, there are plenty of apps on Google Play specifically designed for turn your mobile phone into a microphone or megaphone connected to speakers, televisions, computers, or soundboards. Not all are worthwhile, but some have gained fame for their stability and extra features.
Microphone – Your volume amplifier and speaker
One of the veteran and most highly recommended apps is “Microphone – Your volume amplifier and speaker”This tool turns your Android smartphone into a handheld microphone with a very simple interface, ideal for singing karaoke, giving speeches, or amplifying your voice in meetings.
After installing it, you can choose how to connect your mobile phone to the speakers: via cable (jack) to a sound systemYou can connect your microphone via Bluetooth to a wireless speaker or even using the device's own sound hardware. Once connected, simply slide a virtual switch to turn on the microphone and have your voice played through the speakers almost in real time.
Microphone – Headphones / Microphone
Another interesting alternative is the application known as “Microphone – Headphones” or simply “Microphone” in some versions, intended for using your mobile phone as an external microphone or megaphoneIt stands out for allowing quick switching between input and output modes and using audio via both AUX and Bluetooth.
This app usually includes a integrated equalizer for adjusting bass, mids and trebleThis helps shape the sound of your voice depending on the environment or the type of speaker you're using. It's a very useful option if you want to fine-tune your tone without getting into complicated editors.
Mic Recorder and Microphone (studio apps on your mobile)
On Android you can also find apps like Mic RecorderDesigned for both recording and using the device as a microphone, this app allows adjust microphone sensitivityChoose from several recording formats and enjoy a suitable environment for dictation, podcasts or even music, with support for dark mode and recent updates aimed at improving quality.
Another popular tool is Microphone, which transforms your smartphone's interface into a minimalist studio microphoneAmong its features are adjustable input gain, a fairly comprehensive equalizer, a small amplifier, and audio input and output settings. It also offers a home screen widget for toggling the microphone on and off with a single tap.
WO Mic: Use your mobile phone as a wireless microphone for your computer
If your idea is to use your mobile phone as microphone for video calls or recordings on the PCA very powerful option is WO MicThis application allows the smartphone to act as a wireless microphone by connecting to the computer via WiFi, USB or Bluetooth.
You install the app on your mobile phone, the corresponding client on your computer, and after pairing them, you can select the phone as audio source in videoconferencing, streaming or editing programsIt's a cheap and practical way to improve the sound in Zoom, Discord, OBS or similar without buying a dedicated USB microphone.
Microphone and recorder apps for iPhone
In the case of Apple mobile phones, the integrated microphone usually offers a Very good standard qualityBut there are still several apps that greatly expand the possibilities for using the iPhone as an external microphone or as an advanced recorder.
Voice Recorder – Audio
La app “Voice Recorder – Audio” It's a free tool for iOS with a very clean interface. With a single record button, you can instantly capture any voice or sound and then access an editing section where you can trim fragments, remove parts you don't want, or slightly improve the listening experience.
These types of apps are ideal for those who want Something more than voice notes, but without the hassle of professional softwareThey allow you to tag, organize, rename, and quickly share recordings.
Voice notes as a simple alternative
If you don't want to install anything extra, you always have the app available. Voice notes from Apple, which also lets you edit the recordings, trim them or duplicate themAlthough it may seem basic at first glance, it is quite versatile for everyday use and more than adequate for most domestic or semi-professional uses.
EZ Mic, Mic to Speaker and other interesting apps
Among the most special apps for iPhone (and some also on Android) is the one that stands out EZ Micwhich allows you to quickly import and use your voice, offers sound effects to change the timbre It has become quite popular for gaming and online content creation. Furthermore, it works well as an external microphone for iOS, both with additional accessories and with the phone's internal microphone.
Another eye-catching app is Mic to speaker, which stands out for including a lot of advanced settings: stereo amplifier, mono/stereo modes, classic equalizer, and sensitivity parametersIt allows you to select the sampling rate and adjust values ​​that are normally only seen in studio software, with the idea of ​​getting the most out of the recording quality directly from the iPhone.
Turn your Android or iPhone into a microphone for speakers
If what you want is to use your mobile phone as microphone for a stereo system, powered speakers, or PA systemYou have several simple alternatives on both platforms.
On Android, in addition to the apps already mentioned such as “Microphone – Your volume and voice amplifier” o “Microphone – Headphones”The general procedure is the same: you connect the terminal to a amplifier or active speaker via cable or BluetoothYou open the app, activate the virtual microphone, and speak into the phone as if it were a conventional microphone.
On iPhone, a very popular option is Microphone LiveInstalling this app and connecting the phone via cable, Bluetooth or AirPlay to a speaker systemYou can use your iPhone as an impromptu stage microphone. The app includes a power button, swipe volume control, background and lock screen support to prevent accidental touches, and other techniques. reduction of couplings and feedback which help to avoid annoying beeps when the speaker is nearby.
Tips to improve audio quality with your mobile phone
Even if a smartphone doesn't reach the level of a professional studio microphoneThere are small details that make a big difference in the final result, even if you only use the integrated microphone.
The first key aspect is the environment: try recording in Places that are as quiet as possible, without echo or background noiseRooms with curtains, carpets, or upholstered furniture help absorb sound and prevent your voice from bouncing off the walls as much. If you can only record in a noisy room, holding the microphone close to your mouth and speaking clearly will reduce the impact of ambient noise.
It also has a big influence on distance between the mobile phone and the mouthPositioning the phone about 15-25 cm away usually provides a good balance between volume and clarity, avoiding both direct hiss and distortion from being too close. Using a small tripod or stand minimizes handling noise when holding the phone in your hand.
Another key trick is to activate the airplane mode just before starting to recordTo avoid interference, notifications, calls, and vibrations that could ruin a good shot, check the app you're using to ensure the quality is set to the highest available setting, as many apps allow you to choose between different bitrates or formats. Follow some guidelines. Android tricks to get the most out of your mobile phone.
If you're recording outdoors, place a small sponge or windscreen over the microphone (or shielding the phone with your hand without covering the microphone) will significantly reduce wind noise and drafts. And if you're using an external microphone, a synthetic fur windscreen helps a lot when it's windy.
Edit the recorded audio to polish the result
The final quality of what you have recorded It will depend largely on your phone's microphone. and the environment in which you use it, but post-production editing can save many shots that don't seem so good at first glance.
On the phone itself, you can use apps that can be used for both recording and editingFor example, on Android there are tools like Super soundThese tools allow you to record audio and then trim it, apply filters, adjust volume, or even mix tracks. On iPhone, there are utilities such as Music and audio cutterdesigned to cut, edit fragments and prepare sound clips directly from iOS.
If you're looking for a more professional finish, the usual practice is to transfer the file to your computer and work with it. audio editing programs like AudacityFrom there you can reduce background noise, eliminate buzzing, equalize the voice, normalize volume, and make all sorts of adjustments that you'd hardly be able to achieve with just your phone. However, it's advisable to have some basic knowledge of audio processing to avoid damaging something that was already good.
When editing, keep in mind that you will probably have to eliminate small clicks, flickers and other defects that sneak in without you noticing, so take your time to listen with headphones and clean up the track well.
Frequently asked questions about using your mobile phone as a microphone
Can I achieve studio quality using only my mobile phone as a microphone?
A smartphone, however good it may be, It does not usually reach the level of a professional studio microphoneHowever, by combining a good mobile phone, a suitable app, and a decent external microphone (lavalier, handheld, or wireless), you can obtain more than enough sound for home podcasts, interviews, online classes, and video calls—far superior to the built-in microphone without accessories.
Is it mandatory to install an app to use your mobile phone as a recorder?
Not necessarily. Almost all mobile phones come with a pre-installed recording app.Apps like Voice Memos on iPhone or Recorder on many Android devices allow you to record basic audio without downloading anything. However, if you want more advanced features (equalization, megaphone, speaker connection, etc.), then installing a dedicated app is worthwhile.
What's usually better: using apps alone or buying an external microphone?
It depends on your needs. The apps themselves are Perfect for occasional use and quick solutionsEspecially if you just want to take voice notes or record something informal. On the other hand, if you're looking for a more professional and consistent result, a high-quality external microphone It makes a huge difference, both in clarity and noise reduction, and is the recommended option for content creators, podcasters, and YouTubers.
With all of the above, it's clear that you can Get the most out of your mobile phone, whether new or old, by using it as a microphone in almost any situationRecord audio separately and sync it with video, connect it to speakers like a stage mic, integrate it into your computer for video calls, or enhance it with external microphones and post-production editing. With the right apps, adapters, and tricks, your smartphone becomes a surprisingly versatile audio tool. Share this guide so more users can learn all about it.