green line iphone
iphone 11 suddenly comes up with green line now the whole screen is black
iPhone 11
Question marked as
You should arrange a repair for hardware failures like this.
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