My phone screen has spots that don’t work when you touch it. Like when I touch the h I have to turn the phone.
My iPhone has dead spots when I touch the screen. Like when I touch the h I have to turn my phone sideways.
iPhone 12 mini, iOS 14
Question marked as
You need to have the phone fixed.
You can arrange a service or 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.
If not covered by warranty and you don't have AppleCare+, you may have to pay full replacement cost for severe damage
You can see additional service information within the following article:
Get your iPhone, iPad, or iPod touch ready for service - Apple Support