- A flashlight will help to boost the lighting for cell-phone photos with or without a flash, and since it's a continuous light source, it can help with video too.
- A small single-LED light will work for close-ups and macros. Use a bigger multiple-LED light to throw more illumination a greater distance.
- Many camera phones can capture monochromatic images in near-total darkness with the help of an infrared flashlight. Make sure it is a multiple-LED flashlight with a wide beam to "light" your infrared subjects.