help with image capture on samsung sch-R570?

Hello i dont know how my phone captures screen images like the iphone does, it does it by itself and i dont know how that happens! whenever i look at my pictures i always see screen shots o.O does anyone know how to take screen shots with this phone because i want to know

thanks!<3

if your phone is fine, then you can find some tutorial on the web. some teach you how to c# capture screen images. by the way, what kind of phone are you?