What is the BlackBerry Hub+ Contacts application, how does it work?

According to the introduction of BlackBerry Limited, BlackBerry Hub+ Contacts is a Communication app on the Android platform. There is currently a 2.1910.0.17462 version released on Nov 05, 2019, you can see the details below.

BlackBerry® Hub+ Contacts stores all your contact info in one location for convenient management. Within the app, view your contact details (such as phone numbers and email addresses) and calendar events that you share with a contact. You can also create and manage contact groups.

Major Features:
• Sync work and personal accounts for a truly integrated experience. Supports local and synced contacts from popular email providers such as Gmail, Yahoo!, Office 365, Outlook.com, Microsoft Exchange ActiveSync accounts, and more
• Remotely search your work directory address list right from your device
• Add new contacts and search for a business or location to add it to a contact entry
• Safely share a contact and protect their personal data by controlling which info you share
• Dark theme option gives your BlackBerry Hub+ Contacts a fresh new look and feel
• Fully supports Android Enterprise deployment and, when allowed by your administrator, supports unifying your personal and work contacts while maintaining strict data storage separation

BlackBerry Hub+ Contacts requires the BlackBerry® Hub+ Services app to deliver a consistent experience across all BlackBerry® applications, and to manage your subscriptions
Enjoy BlackBerry Hub+ Contacts for free on your BlackBerry® device!

If you don't have a BlackBerry device:
• Enjoy full functionality of the app for 30 days
• Purchase a monthly subscription to enjoy BlackBerry Hub+ Contacts without ads. This grants you access to all the BlackBerry Hub+ apps, including Inbox, Calendar, Notes, Tasks, and Launcher
• Enterprise Customers, please visit: http://web.blackberry.com/forms/enterprise/contact-us
For support, visit docs.blackberry.com/en/apps-for-android/contacts/