My camera has weird lines
i recently updated to IOS16, and everything seemed fine but then some weird lines appear on the top of my screen when i try to take a picture and i haven't dropped it or hit the camera or anything at all please help me
Your camera or screen most likely has a hardware failure.
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