Transcribe LINE Voice Messages: iPhone & Android Guide
Aug. 17, 2026

To transcribe LINE voice messages, simply save the voice message and upload it to an AI transcription website.
You can easily convert voice messages to text from both iPhone (iOS) and Android smartphones.
This article provides a clear explanation with screenshots on how to transcribe LINE voice messages and calls, and how to use LINE's voice input feature.
What you'll learn in this article:
- How to transcribe voice messages (for iPhone and Android)
- How to record and transcribe LINE calls and phone conversations
- How to send LINE messages using voice input
※ If you already have the voice message audio file, you can transcribe it by simply uploading it to Mr. Transcription.
How to Transcribe LINE Voice Messages (iPhone/Android Compatible)
LINE voice messages can be easily transcribed using the latest AI transcription websites.
The transcription process involves just 3 steps:
- Save the voice message (save the audio file using LINE's transfer feature)
- Upload to a transcription website (simply select the saved file)
- Check the transcription results (you can copy or download the text)
Let's go through the detailed steps together.
Step 1: Save the Voice Message
First, save the LINE voice message to your iPhone or Android smartphone.
To save a voice message, first, long-press the voice message.
A menu will appear above the voice message.

Select "Forward" from the menu.

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

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

Up to this point, the process is the same for both iPhone (iOS) and Android smartphones.
From here, the operation differs for iPhone and Android.
- For iPhone/iPad users → Continue reading
- For Android smartphone users, tap here
Saving Voice Messages on iPhone/iPad (iOS)
For iPhone or iPad iOS, scroll down the menu slightly and select "Save to Files".


On the screen that opens, tap "Save" in the top right corner to finish saving the voice message to your iPhone or iPad.

Saving Voice Messages on Android Smartphones
For Android smartphones, select the destination app.
This time, we selected "Files by Google Downloads" (the standard file app).

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

This completes saving the voice message audio to your Android smartphone.
Step 2: Upload to a Transcription Website
Next, upload the saved audio file to the AI transcription website Mr. Transcription.
Open the Mr. Transcription homepage from here.

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

From here, the operation differs slightly for iPhone (iOS) and Android.
- For iPhone/iPad users → Continue reading
- For Android users, tap here
Selecting Audio Files on iPhone/iPad (iOS)
For iPhone or iPad iOS, tapping "Select" opens a menu.
Tap "Choose File".

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

Selecting Audio Files on Android
For Android smartphones, tap "Select" and choose "Select media" from the menu that opens.

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

Upload File and Start Transcription
After selecting the file, press the "Transcribe" button to upload the voice message audio file.

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

Step 3: Check the Transcription Results
For short audio files, the transcription process finishes quickly.
Once the transcription process is complete, the screen will change to display the transcription results.

You can copy the transcribed text or save it as a text file.
You can also play back audio snippets and edit the transcription results for specific sections.

LINE voice message audio files are saved as m4a or MP4 files on iPhones, and as AAC files on Android smartphones.
Mr. Transcription supports all these file formats, so you can transcribe voice messages directly from both iPhone and Android.

Mr. Transcription's Supported Files and File Sizes. How to Convert Unsupported Files to Supported Files
We'll guide you through Mr. Transcription's supported files and what to do if your file is not supported.
Recommended Transcription Site for LINE (Voice Message Compatible)
If you want to transcribe LINE voice messages or call audio, the AI transcription website Mr. Transcription is highly recommended.
Mr. Transcription is an AI transcription website that allows anyone to easily convert audio to text using the latest AI technology.
With its high accuracy powered by the latest AI, even long audio can be transcribed in about 1 minute.
As a web application accessible via a browser, it works seamlessly on any device, including iPhone, iPad (iOS), Android smartphones, tablets, and computers.
It supports over 100 languages, so you can transcribe foreign language voice messages directly.
Furthermore, it features an AI summary and automatic meeting minutes creation function from the transcription results.
This is convenient for those who want to summarize the content of a LINE call meeting directly into meeting minutes.
What's more, Mr. Transcription is free to use.
You can transcribe up to 3 minutes of audio per day without registration or login, so why not give it a try?
How to Transcribe LINE Calls and Phone Conversations on iPhone and Android Smartphones

When you want to transcribe the content of a LINE call (phone conversation), it's recommended to record the audio during the call using the screen recording feature and then convert it to text with an AI transcription website.
The method for recording LINE call audio differs between iPhone (iOS) and Android smartphones, so we will explain each separately.
- For iPhone/iPad users → Continue reading
- For Android smartphone users, tap here
How to Record LINE Call Audio
■ 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.
Email: mojiokoshi3.com@gmail.com
Transcription for audio / video / image transcription. It is a transcription service that anyone can use for free without installation.
- What is Mr. Transcription?
- Transcript images, sounds, and videos with Mr. Transcription
- Free registration
- Rate plan
- manual
- Try other free services
