Issue Summary:
When viewing an on-call schedule in the Jira mobile app (iOS and Android), selecting an on-call user only displays their Start and End times and email address. The user's phone number, which is visible in the Jira Service Management (JSM) web interface and was previously available in the legacy Opsgenie mobile app, is missing. This creates a friction point for on-call responders who need to quickly contact the person on duty via phone or SMS during an incident.

Suggested Solution:
Update the Jira mobile app's on-call user detail view to include the "Primary" contact phone number, respecting the visibility settings configured in the user's personal notification profile.

Workaround:
Users must access the on-call schedule via a mobile web browser or the JSM web interface to view the contact phone numbers.