Can SLR's GPS positioning be the same as mobile phone positioning?

The same, all use GPS system, so the location is the same.

Single-lens reflex camera, also known as SLR camera, refers to a camera that uses a single lens, through which light shines on the reflector and takes a view through reflection.

"Single lens" means that the photographic exposure light path and the framing light path use the same lens, unlike paraxial cameras or double-mirror cameras, which have independent lenses. "Reflection" means that the plane mirror in the camera separates the two optical paths.