Alexander Graham Bell

HTC is sponsoring an event called Telephones Lines…From Rotary To Hands Free The Evolution Of Telecommunications Design.

The event will showcase how phones has evolved over the years and will exhibit the first cellphone and also have Alexander Graham Bell's early sketch for an electrical phone..

Source: http://mobilesyrup.com/2011/05/19/htc-is-having-a-meet-up-in-vancouver-toronto-and-montreal/