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Call Issues

Why does my number appear as unknown? toggle
If your phone number appears as unknown when making calls, it may be that:

• There are restrictions on the recipient’s device or carrier
The appearance of caller ID will vary depending on the recipient’s device.

For some device models, the name that was registered to the contacts list will appear. However, on other devices, your phone number may appear in an international format or as an unknown number.

Additionally, if the mobile service carrier of the person you are calling is implementing caller ID spoofing counter measures, your phone number will appear as unknown or private; regardless of having verified your phone number.
Note: In regards to whether a carrier is implementing caller ID spoofing counter measures, we ask that you contact them directly.

• You didn't verify your phone number
If you don’t see a phone number at the top of the screen after going to the main menu and tapping the Calls tab > the keypad icon > settings icon, it means that you didn't verify your phone number and you'll appear as unknown.

Please verify your phone number by referring to the following Help article:

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Verifying your phone number to enable Caller ID toggle
To verify your phone number to enable caller ID, please refer to the steps below.

Phone number verification is not available on devices without phone numbers such as iPads, iPod touch devices, tablets, and data-only SIM cards that cannot receive SMS messages.

Steps to Verify Your Phone Number
1. Tap the Call tab.
2. Tap the keypad icon at the top of the screen.
3. Tap the settings icon at the bottom of the screen.
4. Tap Anonymous Call.
5. Tap OK on the pop-up.
6. Complete the verification procedure.
Some Android devices automatically enter the verification code received by SMS.


If you are unable to verify your phone number, please contact us using the Problem Report Form.

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Low call quality toggle
If you use LINE Out in a place with a weak signal or an unstable network connection, your call quality may deteriorate. Please use LINE Out in places with a strong signal.

If you are still experiencing issues with call quality even though you are in a place with a strong signal, please try the following steps.

1. Update your LINE app from the URL below.
http://line.me/update
2. Restart your device.
3. Check if any speed restrictions have been placed on your phone line for exceeding the data usage limit of your plan. If your connection speed is restricted, you may not be able to make calls on a 3G or 4G LTE connection.

If the problem remains after trying the steps above, please contact us using the Problem Report Form.

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I can't use LINE Out (first time user) toggle
When you use LINE Out for the first time, the initial use screen will be displayed, so please tap Start at the bottom of the screen.

This screen will not appear again after the first time.

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