High-conversion Facebook giveaway ad, Click Box style, targeting Vietnam users. Main prize: a realistic Samsung smartphone casually placed on a real wooden table or office desk, in a typical home or small office environment. Phone screen shows normal app icons, metallic texture with subtle natural reflections, slightly tilted or lying flat naturally. Soft, natural lighting from window or room light, realistic shadows and depth, no exaggerated sparkles, glossy effects, or overly stylized CGI. Vietnamese text prominently displayed: "Chúc mừng! Tham gia ngay để nhận Samsung của bạn! 📱" CTA button at the bottom: "Nhận ngay smartphone của bạn!" Style: youthful, friendly, approachable, credible, realistic. Text coverage around 20%, square format 1080x1080 px. Focus on life-like, everyday setting, makes the prize feel tangible and desirable. See more