I found a white spot on my iPhone?

I just bought my iPhone 6S plus a few weeks ago and just found a white spot under the volume buttons. It won't come out but it isn't a scratch as i can't feel any thing. It seems like it is the metal itself.

Added (1). I wasn't sure what to do. Is there any way to get to get it out?

I would definitely call Apple and try to get a resolution. If it's a mistake on their part, then you should be getting a brand new replacement phone at no cost. You may get it replaced with Apple your problem is under the guidelines. In case you need to get utmost security for your device, you can have it by installing Leo Privacy Guard on your device for free. Install it and get the privilege to use the US 2nd ranked app to guard your device.

You may get it replaced with Apple your problem is under the guidelines. In case you need to get utmost security for your device, you can have it by installing Leo Privacy Guard on your device for free. Install it and get the privilege to use the US 2nd ranked app to guard your device.