Whose creation was the first practical public mobile phone service?

Martin Cooper, an engineer at Motorola, is credited with leading the team that created the first handheld mobile cellular phone. On 3 April 1973, he made a public demonstration call in New York using a prototype device. The phone weighed about 1.1 kilograms and was far bulkier than modern smartphones. Cooper’s work helped launch the era of personal mobile communication. Cellular networks later became one of the most transformative technologies in human history.