Why is my volume so low on my iPhone

When you adjust the volume with the left side buttons or in control center is there any change in volume? Is this problem just with phone calls, or is volume low on playing other application like music? What model iPhone do you have and is it still under Apple warranty?

caprice210, If you are close to an Apple Store I would take your iPhone there and have it checked out. If you are not close see this Apple Support Page and scroll down to where it says

“Get Support” Start here. Hopefully you can get your sound issue resolved on the phone.

iPhone - Official Apple Support

Hello caprice210, What happens when you press the volume up button on your iPhone?

Adjust the volume on iPhone - Apple Support

I have the same issue after the last update