This nonfiction book is part of the Graphic Library collection.  This is an excellent source of information which explains how cell phones work and is also in a graphic (comic) format.  This book may be placed in the applied technology section of a library.   The main character takes us through the use of cell phones, the invisible workings, radio waves, roaming, ect.  Lots of information packed into a pleasing format which will certainly both inform and entertain children.  Recommended.