A real candle in your phone!
Light the pages of your favorite Gothic romance novel, look for your lost keys in the dark, add atmosphere to a candlelit Christmas ceremony, walk down spooky hallways with maximum creepiness, hold the candle high at concerts like a lighter, and sate your pyromania without risk.
Touch the wick to extinguish the flame like a real candle.
Touch the candle to turn the flame on.