Namibian learner invents SIM & Airtime-free mobile phone

By This Is Africa on August 4, 2016 — A Namibian Grade 12 learner Simon Petrus is making waves after he invented a mobile phone, with no sim-card, which uses radio signals and doesn’t require airtime to make calls.

Namibian Grade 12 learner Simon Petrus is making waves after he invented a mobile phone, which uses radio signals and doesn’t require airtime to make calls.

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