How to: Upgrade Beta Accounts - stakwork/sphinx-relay GitHub Wiki

Sphinx is now available on the App Store.

Before deleting the Beta Sphinx app, back up your keys to login from the new Sphinx app you will need to download from the App Store.

• Go to the main menu > profile > and tap “backup keys” and save that string
• Delete the app and reinstall from the App Store
• Paste that string on the welcome page

Also, you can check this document How to sign in with multiple devices?