Download LINE Desktop from the official site, log in with your account credentials, and follow the on-screen prompts to sync with your mobile app seamlessly.

No, you need to link your LINE mobile account to access LINE Desktop; first set up LINE on your phone before using the desktop version.

Open a chat, tap the call icon, select 'Group Call', choose up to 200 participants, and start the call directly from the chat window.

LINE Desktop allows up to 200 participants in a group video call, making online meetings and large gatherings easy and effective.

During a call, click the 'Screen Share' button to share your screen with all participants instantly.

In a chat, click the clip icon, select files up to several gigabytes, and send; no special size restrictions are mentioned.

Access Keep Memo from the main menu, then send memos, photos, or notes to your personal space for quick reference and organization.

Yes, chats are encrypted using Letter Sealing; ensure Letter Sealing is enabled in Settings > Privacy for added security.

LINE is free to use; however, optional features like enhanced stickers or certain services may be available through in-app purchases or subscriptions.

Check your internet connection, ensure both apps are updated, and relogin if necessary in Settings > Account to restore synchronization.