Download the app from Google Play or Apple’s App Store.
Open the app; Authy asks for your mobile phone number and email address.
Authy sends you a PIN over a text message. Enter that code in the app.
(for android phones only)
If your code is incorrect (google authenticator code incorrect), confirm:
You entered the code before it expired.
The time on your device is correct for your local time zone.
If your code is still incorrect, use the steps below to sync your Android device:
On your Android device, open the Google Authenticator app
You need to go to settings by tapping on three vertical dots in the top right corner.
Tap on “Time correction for codes.
Then tap on “Sync now”.
On the next screen, the app confirms the time is synced.
You can use your verification codes to sign in.
N.B: The sync only affects the internal time of your Google Authenticator app. Your device’s Date & Time settings won’t change. This sync only works for android devices, ios devices (iPhone,iPad) automatically sync with the network time.
If you are planning to change your phone, you should transfer your google codes to your new phone.
You need:
Your old phone with the Google Authenticator codes create a QR code:
In the Authenticator app, tap More Transfer accounts Export accounts.
Select which accounts you want to transfer to your new phone, and then tap Next.
N.B: If you transfer multiple accounts, your old phone may create more than one QR code.
Your new phone
On your new phone, install the Google Authenticator app.
In the app, tap Get Started.
In the Authenticator app, tap More Transfer accounts Import accounts.
After you scan your QR codes, you get a confirmation that your Google Authenticator accounts have been transferred.
Tip: If your camera can’t scan the QR code, it may be that there’s too much info. Try to export again with fewer accounts.