- One way to tell if someone has added you on line is to see if they have added you in a way that would allow them to contact you.
- If they have, be sure to respond to them and let them know that you are aware of their presence.
How to Use Line App Full Tutorial 
LINE will send you an email when someone new joins the group.
To add someone on LINE, you can type their name into the text field and then click on the Add to Friends button.
Yes, you can message someone on LINE app without being friends. To do so, open the LINE app and sign in with your account. Then, select “Message.” From the menu, select “Message a friend.
No, LINE does not add friends automatically. You must add friends manually by selecting “Add Friends” from the main menu.
There are a few ways to tell if someone has blocked you on LINE:
-If they have not replied to your messages in a few days, or if they have not sent any new messages
-If their account has been inactive for a certain amount of time
-If they have not logged into their account recently
If someone deletes you on LINE app, they will not be able to see your account or message history.
Add people you know and trust to your contact list only if you want them to be able to see your messages and responses.
The green dot on LINE app means that you are connected to a friend or family member.
Yes, LINE Friends can see each other’s LINE activities.
LINE does not use your phone number.
To contact someone on LINE app, you can either type out their name or phone number in the “Contact” field when messaging them, or you can use the “Call” button to make a call.
If you delete someone on LINE, their account will be cancelled and they won’t be able to login or make any new posts.
If someone blocks you on LINE, they will be unable to use the service and will have to wait until you are able to chat with them.
When someone is hidden on LINE, they will not be able to make or receive any new messages or updates.
When someone leaves the chat in LINE, they are no longer part of the conversation.