Create a premium smartphone advertising poster featuring a stylish young female model in a fresh, confident pose with a charismatic expression. Modern trendy fashion, layered clothing, fashionable accessories, realistic skin texture, cinematic lighting, premium reflections, sharp focus, luxury commercial photography style. Futuristic background with subtle tech-inspired elements, elegant typography, sleek graphic design, professional advertising layout, balanced composition, fashion editorial quality, ultra-detailed, photorealistic, dynamic atmosphere, 8K. Brand Style: • Samsung — clean, premium, futuristic, elegant blue-toned aesthetics. • Xiaomi — modern, innovative, youthful, sleek orange-accented tech aesthetics. • Infinix — bold, energetic, vibrant, futuristic street-tech aesthetics.