In cellular service there are two main competing network technologies: Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA). Cellular carriers including at&t wireless, Verizon, Sprint-Nextel, T-Mobile and smaller carriers use one or the other.
The smallest bone in the human body is the stirrup bone, the stapes, one of the 3 bones that make up your middle ear; measuring 2-3 millimeters.
What is the SMALLEST organ in the human body? The skin is the largest (in terms of area). What is the smallest organ? Many organs are part of organ systems, of course, so one has to be careful in saying organ versus organ system. Most organs are multitaskers, too, so one has to be careful there. I want to think that the eyes might be the smallest.