purple dots on screen only when screen is darker
why is there purple dots on my screen when it has a dark background? i haven’t dropped it or put mass amounts of pressure on the screen
iPhone 11, iOS 15
It could still have failed ,
First try a Forced restart
https://support.apple.com/guide/iphone/force-restart-iphone-iph8903c3ee6/ios
If no better
You should arrange a repair
https://support.apple.com/iphone/repair/service
Anything other than Screen or Battery may be a replacement phone and the price is in the article.
You can see additional service information within the following article:
Prepare your iPhone for packing and shipping