The phone is 100% authentic. The phone has never been opened. The phone is very smooth and the camera quality is excellent, feel free to check it. The phone is official. The battery backup is very good, you can check the phone as much as you want. A memo can be provided for security. Due to charging with a bad charger, the phone heated up and a green line appeared, but I can assure you that the phone is still usable. Thank you.