LINE Labs
By using the Silent messaging feature offered in LINE Labs, you can send messages without recipients receiving pop-ups or push notifications.
To send silent messages, enable the feature in advance by following the steps below.

On your main device (typically your smartphone)
1. From the Home tab, tap
2. Turn ON Silent messaging.
On your sub device (typically your tablet)
iPad
1. Tap Settings > LINE Labs.2. Turn ON Silent messaging.
Android
1. From the Home tab, tap
2. Turn ON Silent messaging.
To send silent messages:
1. Open a chat and enter your message.
2. Tap and hold > Send silently.
Note: If you tap Send normally, the recipient will receive a notification.
When sending silent messages, the recipient can confirm that new messages have arrived by checking the unread message count on the LINE icon and the Chats tab.
See also:
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