Cellphones.org has a new infographic that gives you a brief history on CellPhones, and walks you step by step through the entire process of initiating a call.

We use our cell phones all day, every day, but did you ever wonder what is really going on when you make or receive a call? Of course there are towers that we see dotting the landscape and it’s obvious that they make this all possible, but exactly how? Here is a detailed look at how cell phone calls actually work.

Fullsize after the break.

via How a Cell Phone Call Works | Cellphones.org.