Relier Pairs Materials for technical useVersion en ligne What is involved in making a mobile phone? Match the following elements. par Jesús Espinosa 1 How much does it cost? 2 What is it for? 3 What materials is it made of? 4 The outer casing of mobile phones is typically made from... 5 How big is it? 6 How does it work? Plastic, aluminium and other metals They work like two-way radios: the phone converts the sounds of your voice into radio signals and transmits them to another phone, which converts them back into sound. plastic (polycarbonate), aluminium and magnesium. For people to talk to each other from wherever they are. The average price for a free smartphone is currently anywhere between 400€ and 800€. Nowadays the average is more than 5 inches long (12.7 cm).
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