Experts’ opinions on Li-Ion batteries are unanimous – you should keep your iPhone charged at 40%-80%. This is the optimal charge level of your iPhone (or any other smartphone for that matter) to prolong its battery life. … Still, charging your iPhone overnight to 100% often will decrease its battery capacity faster.
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.