IPhones, how to change how much the volume goes up in iphone?

When I press my volume rocker, how do I change the amount the volume goes up by? How do I make the volume increasing and decreasing more sensitive. So when I press the volume up, the volume doesn't increase by a lot but increases a little bit.

You Can't Do That. It Might be on Jailbroken Devices. But it is UnLikely.
Sorry.