Here, you can choose to allow calls or messages (or both) from your “starred” contacts, even when Do Not Disturb is on. … You can also allow “repeat callers” so that if someone calls you twice within 15 minutes — as would be common in emergency situations — it bypasses Do Not Disturb.
When you call a dead phone does it ring?
Answer: A: With a dead battery it should not ring but it should go to voicemail directly.