Congratulations, you’ve just changed your phone number.
Note: You cannot create multiple accounts for the same number. Hence if you’ve entered a previously used number, the old account will become inaccessible.
Case 2: New Installation
So, now if you’ve just installed the app, but while entering, you want to use a new number instead of the old one for some reasons, follow these steps:
- Open the app and select your country and provide a new number and tap on next.
- Now enter confirmation text received on the new number, and tap next.
- Now you’ll be asked if you already have an account, tap on it, and select using Phone number.
- Finally, provide the old number and provide your password that you used to create the account previously.

And in the end, you’ve changed your number on Line app.
For those who want to change their country code on the already working app, follow these methods:
- Backup your chat by going into Settings>Chat> Backup and restore and tapping on Backup now.

- Uninstall and reinstall your line app.
- Continue the methods mentioned above, and in the end, you’ll be asked to restore the backup.
- Click on restore. Now you’ve successfully changed your phone number along with country code.
In case you’ve skipped restoring at the end of the step, you can do it manually. Just navigate back to settings>chats>backup and restore.

Now under Google account, select the account on which the backup exists and tap on the restore button. The restoring process will state, and you’ll get back your chat history.
Conclusion
As you can see, changing phone number on Line chat app very easy. It won’t take much of your time but do it patiently. Because if you rush, you may end up wiping your entire chat history. So its highly recommended to take a backup. Line also provides methods to backup to Google Drive or iCloud based on the device OS you use.