<P> Prior to 1973 , mobile telephony was limited to phones installed in cars and other vehicles . Motorola was the first company to produce a handheld mobile phone . On April 3 , 1973 , Martin Cooper , a Motorola researcher and executive , made the first mobile telephone call from handheld subscriber equipment , placing a call to Dr. Joel S. Engel of Bell Labs , his rival . The prototype handheld phone used by Dr. Cooper weighed 1.1 kilograms ( 2.4 lb ) and measured 23 by 13 by 4.5 centimetres ( 9.1 by 5.1 by 1.8 in ) . The prototype offered a talk time of just 30 minutes and took 10 hours to re-charge . </P>
<P> Prior to 1973 , mobile telephony was limited to phones installed in cars and other vehicles . Motorola was the first company to produce a handheld mobile phone . On April 3 , 1973 , Martin Cooper , a Motorola researcher and executive , made the first mobile telephone call from handheld subscriber equipment , placing a call to Dr. Joel S. Engel of Bell Labs , his rival . The prototype handheld phone used by Dr. Cooper weighed 1.1 kilograms ( 2.4 lb ) and measured 23 by 13 by 4.5 centimetres ( 9.1 by 5.1 by 1.8 in ) . The prototype offered a talk time of just 30 minutes and took 10 hours to re-charge . </P>
when was the first handheld mobile phone invented
when was the first handheld mobile phone invented
April 3 , 1973
April 3 , 1973