Echoes. An echo is a repeat of what you’ve said or what someone else has said while you talk on the phone. Echoes alone are not enough to determine a phone tap because several situations can cause it. For example, if the other phone is put on speaker, you might hear an echo from the speaker phone.
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.