If you are looking to become an “expert” smartphone photographer or simply looking to remove red eye without having to edit every image with an app, you can plug in an external flash and give a major improvement to your picture taking instantly.
Usually supporting the latest iOS and Android devices, these fun gadgets plug directly into the phone/tablet’s audio jack which in return provides control to the light.
The lights generally have a rechargeable lithium battery that provides a good number of flashes before you have to recharge it again, and takes advantage of LEDs in order to provide the longer battery life.
They can also be used for constant light for video recording at generally about 40-60 minutes of such battery life.
One (iBlazr) even comes with it’s own app that provides multiple setting adjustments as well as social sharing and more.