Question: How do scientist make phones?

Jess Wade answered on 18 Jun 2015:

Hey Lol//123.

It depends what parts of the phones you mean. The screens are made from lots of dfiferent light emitting pixels, called ‘light emitting diodes’. When we put electricity into these pixels they glow different colours. The little charges in the electricity move through the molecules in the pixels and hit into each other. When they hit into each other in certain places they glow. We can change what colour they glow by changing what kind of molecules are in the little pixels. What’s nice about my science is that we can print the little molecules and pixels on to plastic chips, then make bendy screens.
The rest of the phone is made using electromagnetic waves. Light waves are ‘electromagnetic’- it basically means they contain electrical and magnetic information. They travel at the speed of light, and transmit from little antennas in your phones. The signals ping from our phones as radio waves, just like the radio signals that come into your car radio. Then they bounce of satellites in the sky and flick back down to your friend. They always take that route, whether you are calling your friend down the road or your friend in America!