I'm looking for a anime that I saw around ten years ago, I forget what the name was and only remember this one plot point and what a few characters looked like, here it goes... The two main Characters where teenage girls, one has short black hair and is always asking cold and dark while the other one has long hair (don't remember the color, just the length but want to say she's a redhead/blond). Anyway they're fighting these deamons or something using cellphones that when opened act like weapons of some sort, and no it's not Future Dairy or Chäos;HEAd, it's older than them if I'm correct.