I am designing app graphics in photoshop , and I want to print it out to check how it will looks like, could buttons be smaller or bigger, and stuff like that. Also I may want to show it to co-workers, etc. When I print standard 360x640px screen size, its output is like 12.7x22,58 cm which is double as bigger as in real device. Does anyone know what's nokia n97 real world screen dpi resolution??