If you lose your phone, download the app again on a compatible phone and sign in with your account information. If you have an active sensor, reinstall the app and sign into your existing account. You’ll be able to continue using your active sensor until the end of its useful life. You will not be able to view historical data in the new installation of the app, but this data will be available in LibreView.††
†† The LibreView website is only compatible with certain operating systems and browsers. Please check www.libreview.com for additional information.