For this, you just need to go the settings option in your WhatsApp and select account to Turn it off. Change your last seen to “nobody” under the Privacy tab. Nobody will now be able to know when you were last seen on WhatsApp. This feature is available both in iOS as well as Android users.
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.