Simon Petrus, a young African inventor from Namibia, made headlines when he built a revolutionary SIM-free phone that operates without airtime or traditional mobile networks. Using radio frequency technology, his device enables calls without a SIM card, making communication 100% free.

The self-taught engineer spent two years constructing his wireless phone using spare parts from TVs and mobile devices. His invention, which also functions as

a TV, radio, fan, and phone charger, earned him first place in a national tech competition.

Despite his groundbreaking invention, Petrus struggled with financial support and career opportunities. He later graduated with a degree in electronics engineering, yet remains unemployed, searching for ways to further develop his projects.