Step 1 : Introduction to the question "Which company is credited with creating the world’s first handheld cell phone?"
...In 1973, engineer Martin Cooper of Motorola led the team that developed the world's first handheld cellular mobile phone, known as the Motorola DynaTAC prototype. Cooper famously made the world’s first public cell phone call while standing on a New York City street, calling a rival at Bell Labs to announce the breakthrough. While earlier mobile phones existed in cars and required bulky equipment, Motorola’s device was the first truly portable, personal cell phone—laying the foundation for the global mobile communications revolution that followed.