How can I install Google Authenticator on a new device?
Step 1: First of all, you’ll want to install and sign in to the app on your new device.
Step 2: Secondly, head to Google’s two-step verification Web page using a browser on your computer. You may need to log in to your Google account to access the security settings.
Step 3: Click the pencil located next to the Authenticator section. A popup will ask you if you want to change devices or remove Authenticator from your account altogether. Switching GA-associated devices will not invalidate any of your existing application-specific passwords and does not require any backup codes to complete the transition. It will, however, render the temporary codes on your old device invalid.
Step 4: Select the type of device you are moving to, and then scan the QR code using the Authenticator app on your new device.
Step 5: Finally, enter the authentication code that appears on the screen to verify the device. This is just like the log-in process when using two-step verification.
Before removing the authenticator from your original device, remember to move your other accounts that are using the app. You’ll need to visit each site individually and scan the QR code with your new device.