You can easily connect your Microsoft, Google, and device contacts to the RingCentral mobile app. You can also set the default contact source you’d like to use when creating new personal contacts all in one place.
Connecting device contacts
Tap the Main menu (your profile photo at the top left).
Tap Connected accounts.
Tap iPhone (iOS) or Device (Android).
Toggle on Access device contacts.
Connecting contacts from your Microsoft or Google account
Tap the Main menu (your profile photo) at the top left.