The main board

All the intelligence of the phone sits on a board smaller than a business card. On it, the processor, the memory, the radio, and dozens of components too small for a name. The traces that connect them are copper, etched into layers of resin. Under a metal shield hides the most complex chip in the object. It is made of silicon, and its thread is open: it goes back to quartz. The copper and tantalum threads are waiting their turn.