A high-end 3D commercial advertisement poster for a next-gen foldable smartphone floating half-open at a dynamic angle against a dark metallic studio background. 

The foldable phone features a dark violet aluminum body with a liquid-metal hinge. Both the outer cover screen and the inner unfolded 7.6-inch Dynamic AMOLED display glow with vibrant purple-and-pink liquid silk digital wallpapers. 

Floating glass callout badges surround the phone displaying tech specs: "FLEX HINGE TECH", "7.6" DYNAMIC AMOLED", "ZERO GAP DESIGN", and "ULTRA THIN GLASS". Top header typography reads "3SCHOOLS FOLD 5G" with subtext "REDEFINING THE SHAPE OF PERFORMANCE". Dark moody backdrop with glowing pink-and-purple light ribbons, high-contrast studio lighting, 8k 3D render. [Reference Image Rule: If I upload a product photo, replace the foldable phone with my uploaded product while preserving the floating dual-screen pose, liquid metal hinge effects, and studio background. If no photo is uploaded, generate the full scene directly.] --ar 9:16