Try reversing one of the LEDs. If nothing, then are you sure they're not IR LEDs?
If so, the illumination of IR LEDs can be seen through most cell phone cameras that don't use an IR filter.
EDIT: Do you have a part number for the LEDs?
Try reversing one of the LEDs. If nothing, then are you sure they're not IR LEDs?
If so, the illumination of IR LEDs can be seen through most cell phone cameras that don't use an IR filter.
EDIT: Do you have a part number for the LEDs?