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This is a nice close-up of a white Samsung Galaxy s4. The mockup is in an outdoor environment in a downtown shopping area. Potted plants and a fountain are in the background. Your product screenshot will cover the reflected image of a person window shopping, but it will definitely stand out. The stage is at portrait orientation and 1080 x 1920 px.
Drag & drop not supported, but you can still upload via this input field: