My mobile phone number is changed.

If you want to change your phone number, delete the Lysn app from your phone and reinstall it.
When you first run the app, check the mobile phone number registered in this section and click No.
If you receive a re-certification with the mobile phone number you want to change, you can use your existing account as the changed mobile phone number.

*If you are logged in immediately after deleting and reinstalling the app, rather than authenticating your mobile phone, please try the following method.

<'Setting' in your device - Account and Back up - Back and Restore - Turning off 'automatic restore'>

However, if there is an event for which you have applied for participation (starchat event, etc.) there may be disadvantages if you change your information.