How to check if my new iPhone was already opened?

This is the iPhone 13 Mini that I bought.

The packaging was only an indicator of how poorly the box was stored/ handled. It looked like the box was dropped in dirty water and then wiped dry. The seals too were in bad shape. I can literally put the phone back and seal the box again.

What is more concerning was the white paper cover on the display which looked like it was opened and put back. Also, check out how the Apple sticker inside the box looks like:

As you can see, it looks like the sticker dropped in water and was dried later.

I’m not worried about the sticker obviously. But its condition indicates that the contents of the box were subject to water/ dampness at some point. Which means the phone may have seen some exposure to liquid. This is what is worrying.

Already spoken to Amazon. This variant is currently out of stock. So they’ll get back to me if a replacement becomes available by next week. Otherwise I’ll consider returning it (although I want this phone).

Not true. You haven't seen the box and the paper covering the screen. I only posted the Apple sticker, whose condition you are free to explain (if you can). I only hope the device hasn't seen any liquid inside or suffered any other form of abuse.

There were multiple indications of tampering/ poor handling/ storage, so I’m sceptical. The phone itself is running very fine. I’m hoping there won’t be any problems in future. If Amazon doesn’t find a replacement by next week, I’ll take a final call on whether to keep the phone or return it.

Thank you for your reassuring words. They help when someone is confused/ concerned.

I don’t think that would be helpful at this point. The phone itself is fine. I’m only worried about potential problems in future if the box was mishandled in the stores/ transit.