Is my iPhone 11 Pro display genuine?

[CuteHelicopter]

I bought a used iPhone 11 Pro and have noticed some brightness flickering. It maybe happens once every twenty minutes and lasts for a second or two. I had a look in the display settings to see if I could tweak something to fix it and noticed that the "True tone" setting was missing. This got me worried that the display isn't genuine, but when looking in Settings (General -> About) for the "Important display message"-text I couldn't find it.

Is it possible that true tone is missing with the original display? Is it possible that the display has been replaced with a non-genuine one without the "Important display message" appearing? Are there any other methods of checking if it's genuine?

I have two weeks to return the phone and if it's not genuine I'll send it back immediately.

 

[BugeyeSTI]

If there's no true tone the display hasn't been paired to your phone... When the display is replaced they have to use a programer to enter the old screens serial number onto the new screen. If that wasn't done, true tone won't be available. Where did you purchase the phone from?

 

[CuteHelicopter]

Thanks! It's definitely been replaced, I found that the blacks aren't black either so it's a cheap LCD screen. I'll return it.