A young woman with shoulder-length dark brown hair and soft bangs, wearing a fitted white tank top and braided black shoulder strap backpack, standing on a subway platform. She is holding a phone with white wired earphones, looking at the camera with a neutral expression. The background shows tiled station walls with green and white tiles, yellow tactile paving, metal train tracks, and overhead fluorescent lights. Natural, candid street photography style, realistic lighting, shallow depth of field.