Your battery drains much faster when it’s hot, even when not in use. This kind of drain can damage your battery. You don’t need to teach your phone the battery’s capacity by going from full charge to zero, or zero to full. We recommend you occasionally drain your battery to under 10% and then charge it fully overnight.
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.