I purchased this used in August and used it for about a month, but a green line appeared on the screen. Other than the line making it difficult to see, there are no other problems, and features like fingerprint authentication and mobile wallet (Osaifu-Keitai) work without issue. However, I couldn't perform system updates no matter how many times I tried, possibly because I was using it on a Docomo network. There are light scratches on the screen, but they were barely noticeable after applying a glass film. There are signs of wear and tear on the sides and around the charging port, such as scuffs and cover marks. There are no scratches on the camera lens. The battery performance is over 80%, with a rough estimate of 86% according to the app. I will ship the phone with the original SONY cover attached. I will also include one extra glass film as a bonus. Series...Xperia Model Name...Xperia 5 IV Smartphone Color...Black Capacity...128GB Functional Issues...Yes