If you get a notification like “Message Not Delivered” or you get no notification at all, that’s a sign of a potential block. Next, you could try calling the person. If the call goes right to voicemail or rings once (or a half ring) then goes to voicemail, that’s further evidence you may have been blocked.
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.