I got a replacement iPhone

It can be either. I see that you have an iPhone Xs MAX and more than likely it is a refurbished iPhone. I wouldn't be worried about it because Apple does a great job restoring/refurbishing just like new. You should not be able to tell the difference from a new iPhone and a refurbished one.

Here is how to Determine if iPhone is New, Refurbished, Replacement, or Personalized

1. Open the “Settings” app on the iPhone
2. Go to “General” and then go to “About”
3. Look for “Model” and then read the model identifier next to that text, it will look something like “MN572LL/A”, the first character will let you know if the device is new, refurbished, replacement, or personalized:

• • M – Brand new device, meaning the device was purchased new
  • F – Refurbished device, meaning the device has been through refurbishing process
  • N – Replacement device, meaning the originally bought device was replaced by this model likely due to a service request
  • P – Personalized device with engraving, meaning the device was customized with an engraving on purchase

Hope that helped.

Axel F.

You are welcome.

Axel F.