Dark shadows appear at the bottom of screen
How do I get rid of the dark shadow that appeared on the right hand corner on my iPhone. I have the most recent updates.
iPhone 12, iOS 15
Question marked as
That is most likely a screen fault or damage, sometimes water.
First try a Forced restart Force restart iPhone – Apple Support (UK)
If no better you should arrange a repair
iPhone Service & Repair - Apple Support
Or
Contact - Official Apple Support
Anything other than Screen or Battery may be a replacement phone and the price is in the article under "Other damage"
See also: Get your iPhone, iPad, or iPod touch ready for service - Apple Support