Engineering · Inside a phone

How does an iPhone work?

Name: How does an iPhone work?
Uploaded: 2026-10-25
Duration: 23 s
Description: Touch the glass of an iPhone, and your finger steals a little electric charge from a grid of invisible wires. The chip finds where, in a few thousandths of a second. Inside it, about twenty billion transistors switch on and off billions of times a second, and turn that touch into pixels, sound and radio waves. A tiny city of switches.

What you’ll see

Touch the glass of an iPhone, and your finger steals a little electric charge from a grid of invisible wires. The chip finds where, in a few thousandths of a second. Inside it, about twenty billion transistors switch on and off billions of times a second, and turn that touch into pixels, sound and radio waves. A tiny city of switches.