A complete guide to transcribing LINE messages! How to easily convert voice messages into text [Updated for 2025]

I want to know how to transcribe LINE messages!

LINE is an essential app for communication.

With the LINE smartphone app, you can send messages using "voice input," which transcribes what you say.

It also has a voice message function that allows you to send recorded voices.

You can also download voice messages and have them transcribed using a transcription service.

In this article, we will explain LINE's voice input function, voice message function, and how to record and transcribe phone calls.

Why not try using LINE more conveniently with a transcription service?

Recommended free transcription service for converting LINE messages into text [Voice message support]

There are some recommended services for transcribing LINE voice messages and recorded phone calls .

This is "Mr. Transcription", an AI transcription service!

"Mr. Transcription" is a transcription service that uses the latest AI to allow anyone to easily convert audio into text.

With the high level of accuracy that only the latest AI can provide, even long audio recordings can be transcribed in just 10 minutes.

What's more, you can use "Mr. Transcription" for free !

You can transcribe up to three minutes of audio without having to register or log in , so you can turn your audio file into text right away.

If you're looking for a way to transcribe LINE messages, why not try "Transcription-san" ?

How to send LINE messages using the voice input function [transcription from voice]

By using the voice input on your iPhone or Android device , you can transcribe what you say into text and send it as a message on LINE.

First, we will explain how to voice-enter messages on LINE .

*The explanation is based on iOS18 screen for iPhone and Android12 screen for Android.

1. Preparing for voice input

To input (transcribe) LINE messages by voice, you first need to turn on the voice input function on your iPhone or Android smartphone .

How to set up voice input (transcription) on iPhone

To turn on the voice input function on your iPhone, first open the Settings app .

Open "General" in the "Settings" app.

Select Keyboard .

Under "Keyboard," turn on "Enable voice input."

You're now ready to start voice input (transcription) on your iPhone.

How to set up voice input (transcription) on Android

To turn on the voice input function on Android, first open the "Settings" app .

Open the Settings app and scroll down to the bottom and select System .

Next, open "System" and then "Language and input."

On the "Language and input" screen , select "On-screen keyboard."

When you open "On-Screen Keyboard", a list of currently installed keyboards will be displayed, so select the keyboard you normally use (I selected "Gboard" this time).

On the keyboard settings screen, select "Voice input."

On the screen that opens, turn on voice input .

You're now ready to dictate (transcribe) on your Android.

*On Android, the setting method may vary depending on the keyboard app you are using.

2. Voice input into LINE

Now let's actually try using voice input on LINE!

How to voice input to LINE on iPhone

On the LINE message screen, select the message input field and open the keyboard.

Tap the microphone icon at the bottom left of the keyboard .

If the message "Enable voice input?" appears , select "Enable voice input."

A microphone and the letter "a" will appear in the input field, allowing you to input by voice.

In this state, if you speak into the iPhone microphone, what you say will be transcribed like this.

Click the send button to send the transcript.

You can end voice input by tapping the microphone icon at the bottom left of the keyboard again.

Steps for voice input into LINE on Android

On the LINE message screen, select the message input field and open the keyboard.

Tap the microphone icon in the top right corner of the keyboard .

*Tap the microphone one level below the one on the right side of the LINE input field, not the one on the right.

The message "Please speak" will be displayed and you will be able to input voice commands.

In this state, if you speak into the microphone of your Android smartphone, your content will be transcribed as shown below.

Click the send button to send the transcript.

Press the microphone button again or tap any other button to end voice input.

[2025 Latest] How to enter voice messages on LINE

In addition to voice input, LINE also has a "voice message" function .

Voice messages are a feature that allows you to send audio recorded on the spot via LINE, just like sending images and videos.

You can send emotions and information that can only be conveyed through voice, such as congratulatory messages for birthdays and graduations, or song melodies.

Now let's take a look at how to send a voice message on LINE.

[iPhone] How to send a voice message on LINE

We will explain how to send a voice message on your iPhone.

First, open the message screen and tap the microphone icon to the right of the input field .

"Tap the button to record" is displayed.

Tap the red record icon to start recording your voice message.

Tap the stop icon to stop recording your voice message.

When you press the send button, the recorded audio will be sent as a voice message.

You can listen to the voice message you sent by pressing the play button.

[Android] How to send a voice message on LINE

The method for sending voice messages on LINE is the same as on iPhone.

Once you open the message screen, tap the microphone icon to the right of the input field .

"Tap the button to record" is displayed.

Tap the red record icon to start recording your voice message.

Tap the stop icon to stop recording your voice message.

Click the Send button to send your voice message recording.

Similarly, you can press the play button to listen to the voice message.

[Recommended for LINE voice messages] AI transcription service for iPhone and Android "Transcription-san"

"Transcription-san" is an AI transcription service recommended for transcribing LINE voice messages .

Its special feature is that it uses the latest AI to easily transcribe from your iPhone or Android !

Click here to open the "Mr. Transcription" page and you can convert your LINE voice messages into text right away!

What's more, "Mr. Transcription" is free!

No registration or login is required to use it , so why not try out "Mr. Transcription" right away?

[iPhone/Android compatible] How to transcribe LINE voice messages

LINE voice messages can be easily transcribed using AI!

If you want to transcribe voice messages, we recommend the AI transcription service "Transcription-san."

We will explain the process of transcribing LINE voice messages using "Mr. Transcription."

1. Save LINE voice messages

First, save the LINE voice message on your smartphone .

How to save LINE voice messages

To save a voice message, first press and hold the voice message .

This will open a menu above your voice messages.

Select "Transfer" from the menu.

You will now be asked to select which voice messages you want to forward, so select the voice messages using the check boxes and press the "Forward" button.

On the screen that opens , under "Select destination" tap "Other apps."

From here on, things are a little different for iPhone and Android, so I'll explain them separately.

Steps for iPhone

For iPhone, scroll down the menu a little and select "Save to Files."

Tap "Save" in the top right corner of the screen that opens to save the file to your iPhone.

Steps for Android

For Android, select the app you want to save to .

This time I selected "Files by Google Downloads" (the standard file app).

Once selected, the file will be downloaded and saved automatically.

You can now save the audio of your voice messages on Android.

2. Select the audio file for the voice message

Next, select the saved audio file on the Mr. Transcription page.

Click here to open the Mr. Transcription homepage .

Scroll a bit, then tap "Select" to choose your file.

For iPhone

On an iPhone, tap "Select" to open a menu.

Tap Choose File.

A file selection screen will open, so select the file you want to transcribe.

For Android

For Android, tap "Select" and then select "Select Media" from the menu that opens.

The file selection screen of the "Files" app will open , so navigate to the folder where you saved the voice message file and select the file.

"Mr. Transcription" supports LINE transcription on both iPhone and Android!

The audio files for LINE voice messages are

• iPhone: m4a or MP4 file
• Android: AAC file

will be saved in.

Mr. Transcription works with any file format!

Whether you're using an iPhone or Android, you can transcribe LINE voice messages.

3. Upload the audio file for your voice message

Once you have selected the file, press the "Transcribe" button to upload the audio file of your voice message.

The upload will be completed instantly and the transcription process will begin automatically.

For short audio files, the transcription process will be completed quickly.

Once the transcription process is complete, the screen will change to show the transcription results .

You can copy the transcription results or save them as a text file.

[Free] Want to easily transcribe your LINE voice messages?

In this way, you can easily convert LINE voice messages into text using Mr. Transcription !

What's more, "Mr. Transcription" is free!

You can transcribe up to three minutes of audio for free without having to register or log in , so you can easily turn voice messages into text right away .

Why not transcribe your important voice messages with Mr. Transcription ?

■ AI transcription service "Mr. Transscription"

"Mr. Transcription" is an online transcription tool that can be used from zero initial cost and 1,000 yen per month (* free version available).

• Supports more than 20 file formats such as audio, video, and images
• Can be used from both PC and smartphone
• Supports technical terms such as medical care, IT, and long-term care
• Supports creation of subtitle files and speaker separation
• Supports transcription in approximately 100 languages ​​including English, Chinese, Japanese, Korean, German, French, Italian, etc.

To use it, just upload the audio file from the site. Transcription text is available in seconds to tens of minutes.
You can use it for free if you transcribe it for up to 10 minutes, so please try it once.

It is "Mr. Transcription" who can easily transcribe from audio, video, and images. Transcription allows you to transcribe for up to 10 minutes for free. You can copy, download, search, delete, etc. the transcribed text. You can also create subtitle files, which is ideal for transcription of interview videos.

HP: mojiokoshi3.com
Email: mojiokoshi3.com@gmail.com