Dropbox provides users with the option to manage Two-Factor Authentication from their website. When first invited into Dropbox, users should set up the following security options:

1. Two Factor Authenticator through the Google Authenticator app on their smart device;
2. A Backup Phone Number;

Changing your Smart Device

A User may want to disable 2FA if they decide to change their smart device. Before switching to a new device (i.e. smartphone), it is important that users first use Two-Factor Authentication from their previous device to log in to Dropbox and then switch two-factor authenticator to a new device. If the previous device has been discarded, lost or broken, but the phone number has not changed, Dropbox can send a text message with the security code to the backup phone.

Send a security text message to your backup phone

1. Login to Dropbox with your username and password
   
   è  The Dropbox Two-Factor Authenticator screen opens
   
   
   
2. Click on Having trouble getting a code?
   
   è  The Sign in with a notification screen opens
   
   
   
   
3. Click on Text my backup phone
   
   è  The Sign in with a backup phone screen opens
   
   
   
   
4. Click on [Text my backup phone]
   
   è  A text message including your 6-digit security code is sent to your backup phone
   
   è The Enter Dropbox 2-step verification code screen opens
   
   
   
5. Enter the 6-digit security code from the text message and click on [Enter]

Enable Two Factor Authenticator on a new Smart Device

1. In Dropbox click on the account icon on the top right-hand side of the screen
2. Select Settings
   
   è The Dropbox User Accounts screen opens
   
   
   
   
3. Select the [Security] Tab
4. From the Two-step verification section, click on Edit next to the Authenticator app Preferred Method
5. Enter your Dropbox password to access the next screen
   
   è The Edit two-step verification screen opens
   
   
   
   
6. Select the option Use a mobile app and click on [Next]
   
   è The Edit two-step verification screen opens
   
   
   
   
7. Open the Google Authenticator App in your new smart device and scan the QR code
8. Click on [Next]
   
   è The Edit two-step verification screen opens
   
   
   
   
9. Type the 6-digit code from your Google Authenticator app and click on [Next]
   
   è The Edit two-step verification - backup phone number screen opens
   
   
   
   
10. Type your mobile number and click on [Next]
    
    è Two-step verification is set up on your new smart device