If you're having issues restoring your chat history from iCloud, try the troubleshooting tips below.
Note: If you want to back up and restore from iTunes, please do so at your own risk.
• Update the OS of the device you want to restore your chat history on to the latest version.
• Restart your device.
• Sign in to iCloud.
• Uninstall the LINE app and then reinstall it from the App Store.
• Tap Restore chat history from backup.
Important: If you back up your chat history on a new device, the backup file will be overwritten without any chat history and cannot be restored.
If you've tried everything above but are still unable to restore your chat history, it may not have been backed up properly. Unfortunately, there will be no way to restore your chat history if it has been lost for any reason.
Please understand that backups and restorations made with iTunes or iCloud are not part of the LINE service, so we cannot offer support or guarantee that you’ll be able to recover your chat history properly.
Let us know if we can make it better.
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