I have a white tiny mark on the back of my iPhone 6 the aliminium part?

Which I want to remove despite it being very small. I try scrape it, scratch it, and rub it off but it doesn't go wot shud I do?

Added (1). I had something similar on my iPad Air but it was sliver and it slowly became into a circle dent. I don't want my iPhone to get a dent

Added (2). Imagine it becomes a dent no I want to sell my phone later on I have to knock off 20-30£

Live with it. It's a phone.

Leave it alone.

Leave it alone before you break something that won;t be covered by insurance

It won't go, it's chipped off. More you scratch it, scrape it, it will get bigger. Don't do anything, let it be.

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