Article: It’s a green icon with a white speech bubble that says “LINE” inside. You’ll usually find it in the app drawer. It’s near the top-right corner of the screen and looks like a person’s head and shoulders with a “+” symbol. It’s the first icon at the top of the screen. Once this person receive the invitation, they can follow the instructions contain within to confirm your friendship.   Text message: This opens your Android’s default messaging app to a new message. Select the contact you wish to invite, then send the message.  Email: A new email message containing the invitation will be created. Enter the recipient’s email address, then send the message.  Share: This opens a list of social and messaging apps you can use to share the invitation link, such as Facebook, Messenger, and Twitter. Select your desired app, choose a recipient, then send the message.

What is a summary?
Open LINE on your Android. Tap the new contact icon. Tap Invite. Select a sharing method.