For context, the “green line Issue in OnePlus devices is a display problem where users see a thin vertical green line running down their phone a long ways. This problem generally happens due to a hardware failure, mostly with the Display panel or internal linkups. It may be caused by physical damage, factory defects, or sometimes software troubles but always hardware could have undergone the first failure cause.https://www.techeminds.com/what-is-the-green-line-in-oneplus/