You can delete contacts on the RingCentral App from the Contact section. You can only delete personal contacts.

On iOS

1. Launch the RingCentral app.
2. Go to Contact > Personal, then select the contact to delete.
3. Tap Edit on the upper-right corner.
4. Scroll down, then tap Delete Contact at the bottom.

On Android

1. Launch the RingCentral app.
2. Go to Contact > Personal, then select the contact to delete.
3. Tap the Pencil button on the upper-right.
4. Tap the Trash button on the upper-right, then tap Delete Contact.