Universal connection for cellular telephone interface

An apparatus for use with a selected one of a plurality of cellular telephones, comprising:

• a first pocket device having a body with a receiving section and an electrical interface, said receiving section for use in holding a first cellular telephone and having a first physical configuration including first dimensions, said electrical interface including a number of signal output conductors that have a predetermined physical arrangement;
• a second pocket device having a body with a receiving section and an electrical interface, said receiving section for use in holding a second cellular telephone and having a second physical configuration including second dimensions that are different from said first physical configuration and said dimensions of said receiving section of said first pocket device and in which said receiving section of said second pocket device is unable to properly hold the first cellular telephone and said receiving section of said first pocket device is unable to properly hold the second cellular telephone, said electrical interface of said second pocket device including a number of signal output conductors that have a predetermined physical arrangement that is the same as said predetermined physical arrangement of said signal output conductors of said electrical interface of said first pocket device;
• a common connector connectable to each of said electrical interfaces of each of said first and said second pocket devices, with said common connector being selected for connection to said electrical interface of said first pocket device using said predetermined physical arrangement of said signal output conductors;
• a common device for providing at least a first predetermined function associated with a plurality of cellular telephones including the first cellular telephone and the second cellular telephone, said common device being detachably connected to said body of said first pocket device;
• and
• communication means for providing electrical communication between said common device and said electrical interface of said first pocket device using said common connector;
• wherein when said body of said first pocket device, while properly holding the first cellular telephone, is detached from said common device, said number of signal output conductors are also detached with said body while said communication means maintains electrical communication between said first pocket device and said common device.