
Open any smartphone and you will find a small green board packed with chips. Each one has a simple job.
The main parts
- Processor: the brain that runs apps.
- Memory (RAM): the short-term workspace.
- Storage: where photos and apps live.
- Radios: for mobile data, Wi-Fi and Bluetooth.
- Battery: the biggest part of all.
Knowing the parts makes it much easier to compare phones when it is time to upgrade.
The best ideas are often the simplest ones.

A photo on the left lets the words flow around it, a lovely way to add a second picture without breaking the rhythm of the post. On a phone it sits neatly above the text.
Photo: Ludovico Ceroseis on Unsplash.
I never knew what RAM actually did. Finally makes sense!
Glad it clicked! A desk-and-drawer analogy works for most people.