is the black spot on my oled iphone x screen is likely to exapnd

We can’t diagnose your issue remotely, sorry.

I suggest that you have your X inspected at an Apple Store or Authorized Service Provider. After checking it out, they’ll give you all the available options.

Regards

Giulio

Will a blob in a display expand? Prolly.

But it’s hardware. It might not. Weirder things have happened.

Check with Apple or your preferred hardware service provider.

Luckily I don’t have that problem, so I can’t report my experience about that.

Best of luck,

Giulio