You can NOT USE it if you do not have the LINE APP INSTALLED. It is an app that shows a popup notification when the notification of LINE arrives. It is recommended for those who do not notice the standard notification of LINE alone or who want to read the message without marking as read. *Images cannot be displayed on Android 11 and above. Please note -------------------- I have only confirmed the operation on some models. If something goes wrong, please report to [email protected]. -----