You can check and change your registered email address and change password by accessing the LINE app on the device you used to create your LINE account.
1. Tap the More > Settings > Account.
2. Tap Change Your Email.
You can also use QR code login. Please see the below Help article.
When you log in with a QR code, you can log in to the iPad version without registering an email address. QR codes are valid for five minutes, however, depending on the device this may be shorter.
Steps to log in with a QR code
1. Start the iPad version of LINE.
2. Tap QR Code Login.
3. Start the smartphone version of LINE.
4. Tap More > Add Friends > QR Code.
5. Scan the QR code that appears on the iPad version.
6. Tap Login.
The login process will be completed once the Login Successful message appears.
When logging in to LINE for the first time on your iPad, you will be asked to enter a verification code in the LINE app on your smartphone. This process will be required if you reinstall LINE on the same device.
Please have your smartphone version of LINE on hand, and follow these steps.
1. Log in to LINE on the iPad with your email address and password, or log in with QR code.
2. A 4-digit or 6-digit verification code will be displayed.
3. Start the LINE app on your smartphone and enter the verification code shown on your iPad.
If you create a new LINE account on a new device without deleting the account on your previous device, you will end up having two accounts.
Your old account cannot be deleted if you no longer have access to your previous device. Please ask your friends to block your old account in this case.
Please see the following article for help with blocking friends.
A LINE account is defined as the phone number, name, photo, ID, and other information used on LINE. By deleting your account, all of the above information will be deleted.
An ID is a key used to identify LINE users. This is not configured by default when you first start using the service, and you can configure one by going to More > Settings > Profile. LINE IDs cannot be changed once configured.
With a LINE ID, users who don't know your phone number can easily find and add you as a friend if you exchange IDs with them. If you do not want other users to find you using your ID, you can turn off “Public User ID” under Profile in the Settings menu.
Publicizing LINE IDs on the internet for the purpose of meeting a person for sexual encounters is prohibited by the Terms and Conditions and Use.
If you see “This User ID is unavailable.” or “This ID is already in use.” when trying to set your ID, or if you see another user when searching with the ID you want to use in Add Friends, the ID is already in use.
As LINE does not allow duplicates of the same ID, please try using another one.