The smallest operational telephone was created by Jan Piotr Krutewicz, Munster, USA on 16 September 1996. It measured just 47.5mm x 10mm x 21mm 1.8in x 0.3in x 0.8 in.
The smallest operational telephone was created by Jan Piotr Krutewicz, Munster, USA on 16 September 1996. It measured just 47.5mm x 10mm x 21mm 1.8in x 0.3in x 0.8 in.