Cell Site Analysis is a means of establishing the geographical location of a mobile phone when calls, SMS messages or data is sent or received. With the prolific usage of mobile phones throughout the world, Cell Site Analysis has become critical within civil and criminal investigations. The geographical area that a cell covers is determined by a combination of factors including the cell type, cell orientation, transmission power, the arrangement of other cells, network usage and the physical features of the locality. These cell characteristics are variable over time and therefore must be considered as part of a cell site analysis. With many individuals carrying more than one mobile phone, being able to determine the movement and location of a handset, accurate to within a few meters, can be invaluable admissible evidence in court.