Verification via push notification or location-based automated verification with the Salesforce
Authenticator mobile app version 2.0 will be available following the completion of the Spring ’16 Salesforce
release to all production orgs on February 13, 2016. It isn’t available for preview or testing in sandbox orgs beforehand. Because of App Store and Google Play release processes, it’s possible that version 2.0 could be available for download before the new verification method is available in sandbox and production orgs. Users who download the new version of the app can’t use version 2.0 functionality in Salesforce
until the new verification method is released.