Prompt: The poster's product is a new smartphone, so the image uses a high-resolution screen night view to create a sense of technology and futurism. A young person stands in the night scene, taking a photo with the new smartphone. The phone's high-resolution screen clearly captures the city's night view. The background of the poster is the city's night view, with bright colors and full of vitality. The poster's text is clear and concise, urging consumers to buy now.