What's iphone capacity in settings?

What is iphone capacity if you go into settings/generAl then about it has capacity and below it is avalonlemwhat does this mean?

Capacity is how much it can hold, in this case how much space is left (in total) for you to do whatever you want. Below that is available, that is how much of the capacity you have left.

Available? That's how much storage room you have left to use if you download things or load music or take pics. That number goes down with the more stuff you add. Best luck.

This allows you to see that how much space is left on the device and how much space the device holds total