Currently, users cannot add contacts integrated via M365, Outlook, or Google to their Favorites within the RingCentral app. When these contacts are the source, the option to add to favorites (STAR button) is not available.

In contrast, contacts originating from RingCentral, TELUS, or AT&T can be added to Favorites without issue.

Users should be able to add contacts from connected accounts (M365, Outlook, Google) to their Favorites, provided the contact has a valid phone number. This aligns the behavior with contacts originating from RingCentral, TELUS, or AT&T.

Benefit / Business Justification:
- Improves user efficiency and contact accessibility.
- Provides consistent functionality across all contact sources.
- Reduces user confusion when contacts from connected accounts cannot be starred.

Proposed Solution / Enhancement:
- Enable the STAR button for contacts from connected accounts if they have a valid phone number.
- Maintain restrictions for guests or contacts without phone numbers.

This request is based on multiple user inquiries and feedback regarding favorites functionality inconsistencies.