LINE Voice Message Transcription: Easy Text Conversion Guide

June 8, 2025

LINE Voice Message Transcription: Easy Text Conversion Guide | AI Transcription Service - Mr. Transcription
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I want to know how to transcribe LINE messages!

LINE is an essential communication app.

The LINE smartphone app allows you to send messages using "voice input" to transcribe what you've spoken.

It also features a voice message function for sending recorded audio.

You can also download voice messages and convert them to text using a transcription service.

This article explains how to use LINE's voice input feature, voice message function, and how to record and transcribe calls.

Why not make your LINE experience even more convenient with a transcription service?

Recommended Free Transcription Services for LINE Text Conversion [Supports Voice Messages]

There's a highly recommended service for transcribing LINE voice messages and recorded call audio.

It's the AI transcription service, "Mojiokoshi-san"!

Mojiokoshi-san

"Mojiokoshi-san" is a transcription service that uses the latest AI to easily convert audio to text for anyone.

Thanks to its high accuracy powered by the latest AI, even long audio files can be transcribed in just 10 minutes.

What's more, "Mojiokoshi-san" is free to use!

You can transcribe up to 3 minutes of audio without registration or login, allowing you to convert audio files to text instantly.

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

How to Send LINE Messages Using Voice Input [Voice to Text Transcription]

By utilizing voice input on your iPhone or Android, you can transcribe what you've spoken into text and send it as a LINE message.

First, we'll explain how to input messages by voice in LINE.

*Instructions are based on iOS 18 for iPhone and Android 12 for Android.

1. Prepare for Voice Input

To use voice input (transcription) for LINE messages, you first need to enable the voice input function on your iPhone or Android smartphone.

How to Set Up Voice Input (Transcription) on iPhone

To enable voice input on your iPhone, first open the "Settings" app.

Open the

From the "Settings" app, open "General".

Open

Select "Keyboard".

Select

Under "Keyboard," turn "Enable Dictation" ON.

Turn

You are now ready to use voice input (transcription) on your iPhone.

How to Enable Voice Input (Transcription) on Android

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

Open the Settings app

Scroll down the "Settings" app and select "System" at the bottom.

Select System

Next, open "Languages & input" within "System".

Open Languages & input

On the "Languages & input" screen, select "On-screen keyboard".

Select On-screen keyboard

When you open "On-screen keyboard", a list of currently installed keyboards will appear. Select the keyboard you normally use (in this case, "Gboard" was selected).

Select the keyboard you normally use

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

Select Voice typing

On the screen that opens, turn voice input ON.

Turn voice input ON

You are now ready to use voice input (transcription) on your Android device.

※Note that the setup method may vary on Android depending on the keyboard app you are using.

2. Using Voice Input in LINE

Now, let's try using voice input directly in LINE!

Steps to Use Voice Input in LINE on iPhone

In the LINE message screen, select the message input field to open the keyboard.

Open the keyboard

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

Tap the microphone icon at the bottom left of the keyboard

If "Enable Dictation?" appears at this point, select "Enable Dictation".

Select Enable Dictation

A microphone icon and an "A" (for Japanese input) symbol will appear in the input field, indicating that voice input is ready.

Voice input is ready

When you speak into your iPhone's microphone in this state, your spoken words will be transcribed as shown.

Spoken words are transcribed

Once you press the send button, the transcribed content will be sent.

Send transcribed content

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

How to Use Voice Input in LINE on Android

In the LINE chat screen, select the message input field to open the keyboard.

Open the keyboard

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

Tap the microphone icon

※Tap the microphone icon below the input field, not the one to the right of the LINE input field.

The message "Please speak" will appear, indicating that voice input is ready.

''Please speak'' is displayed

If you speak into your Android phone's microphone in this state, your speech will be transcribed as shown.

Example of voice input

You can send the transcribed content by pressing the send button.

Send content

Voice input will end if you press the microphone button again or tap another button.

LINE Voice Message Input Methods [Latest 2025 Guide]

In addition to voice input, LINE also offers a "Voice Message" feature.

Voice messages allow you to send recorded audio directly within LINE, similar to sending images or videos.

You can send emotions or information that can only be conveyed through audio, such as birthday wishes, graduation messages, or song melodies.

Let's go through how to send LINE voice messages step by step.

How to Send LINE Voice Messages on iPhone

Here's how to send voice messages on an iPhone.

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

Tap the microphone icon to the right of the input field

The message "Tap the button to record" will appear.

Tapping the red record icon will start recording the voice message.

Tap the red record icon

Tapping the stop icon will stop recording the voice message.

Tap the stop icon

Pressing the send button will send the recorded audio as a voice message.

Send recording

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

How to Send LINE Voice Messages on Android

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

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

Tap the microphone icon to the right of the input field

You will see "Tap the button to record."

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

Tap the red record icon

Tap the stop icon to stop recording your voice message.

Tap the stop icon

Press the send button to send the recorded voice message.

Send recorded audio

Similarly, you can listen to the voice message content by pressing the play button.

[Recommended for LINE Voice Messages] AI Transcription Service "Mojiokoshi-san" for iPhone and Android

Mojiokoshi-san

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

Its key features include cutting-edge AI and the ability to easily transcribe from iPhone or Android devices!

Once you open the "Mojiokoshi-san" page from here, you can instantly convert your LINE voice messages to text!

What's more, "Mojiokoshi-san" is free!

Since it can be used without registration or login, why not try "Mojiokoshi-san" right now?

[iPhone/Android Compatible] How to Transcribe LINE Voice Messages

You can easily transcribe LINE voice messages using AI!

For transcribing voice messages, the AI transcription service "Mojiokoshi-san" is highly recommended.

Here's how to transcribe LINE voice messages with "Mojiokoshi-san."

1. Save LINE Voice Messages

First, save the LINE voice message to your smartphone.

Steps to Save LINE Voice Messages

To save a voice message, first, long-press the voice message.

A menu will appear above the voice message.

Long-press voice message

From the menu, select "Forward."

Select 'Forward'

You will be prompted to select which messages to forward. Check the box for the voice message and press the "Forward" button.

Select voice message

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

Tap 'Other apps'

From here, the process differs slightly between iPhone and Android, so we'll explain them separately.

iPhone Process

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

Scroll down the menu slightly

Select 'Save to Files'

On the screen that opens, tap "Save" in the top right corner to complete saving to your iPhone.

Tap 'Save' in the top right corner

Android Process

For Android, select the destination app for saving.

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

Select the destination app

Once selected, the file will automatically download and save.

File automatically downloads and saves

This completes saving the voice message audio on Android.

2. Select the Voice Message Audio File

Next, select the saved audio file on the 'Mojiokoshi-san' page.

Open the 'Mojiokoshi-san' top page from here.

Mojiokoshi-san top page

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

Select file

For iPhone

On iPhone, tapping "Select" opens a menu.

Tapping 'Select' opens a menu

Tap "Choose File."

Tap 'Choose File'

The file selection screen will open, so choose the file you want to transcribe.

Select file

For Android

On Android, from the menu that opens when you tap "Select," choose "Media selection."

Tap 'Media selection'

The "Files" app's file selection screen will open. Navigate to the folder where you saved the voice message file and select it.

Files app file selection screen opens

'Mojiokoshi-san' Supports LINE Transcription on Both iPhone and Android!

LINE voice message audio files are:

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

It will be saved as.

"Mojiokoshi-san" supports all file formats!

You can transcribe LINE voice messages whether you use an iPhone or Android.

3. Upload the voice message audio file

After selecting the file, press the "Transcribe" button to upload the voice message audio file.

Press the 'Transcribe' button

The upload will complete quickly, and the transcription process will start automatically.

Transcription process starts

For short audio files, the transcription process finishes almost instantly.

Once the transcription is complete, the screen will change and display the transcription results.

Transcription complete

You can copy the transcribed text or save it as a text file.

Want to easily transcribe LINE voice messages for free?

As you can see, you can easily convert LINE voice messages to text with "Mojiokoshi-san"!

What's more, "Mojiokoshi-san" is free!

You can transcribe up to 3 minutes of audio for free without registration or login, so you can easily convert voice messages to text right away.

Why not try transcribing your important voice messages with "Mojiokoshi-san"?

■ AI transcription service "Mr. Transscription"

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  • 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.
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Email: mojiokoshi3.com@gmail.com
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