We’re glad to hear you’re enjoying your Galaxy S24 FE! Regarding your concern, a green line on the display is generally linked to hardware stress or damage rather than a setting. Have you noticed any recent drops, pressure on the screen, or physical damage? Also, are you using the original Samsung charger and cable with your device?
To help maintain your display, we recommend avoiding extended use at maximum brightness, preventing overheating, and using a protective case or screen protector. If you ever notice a green line appear, we suggest visiting a Samsung Authorized Service Center for a proper inspection.
