iPhone 14 Horizontal Lines is Just Software Bug
According to 9To5Mac’s latest report, the horizontal line issue is caused by a hardware problem.
Many affected iPhone 14 users shared their experiences. One of them said that the horizontal lines commonly appear when the handset turns off after watching videos.
This usually happens when the users are about to sleep. Because of this, they often see the horizontal lines on their screens whenever they wake up to check their devices.