How to Create Group Play on Galaxy S4
Group Play on Galaxy S4 lets you share music, picture, document, and play games with friends in the same group. You can join, create Group play on ...
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The account you have created in the Line application using your email and number, has some information that is public to other users. It is better for you to update your profile.
In order to do that, go to : More - Settings - Profile
You can choose your own photo (marked in red), change your name (orange), update your own personal status (blye), and choose a user (only once) (green), or delete your account.