All cell phones have a camera that does not have a mirror nor does it have interchangeable lenses. In order for a DSLR to be a DSLR, it must have a mirror. Therefore camera modules in smartphones cannot be considered DSLRs.
Mirrorless cameras, like DSLRs have interchangeable lenses and sometimes even a shutter. But as the name indicates, these cameras do not have a mirror. This is why mirrorless cameras cannot be called DSLRs.
Point-and-shoot cameras are those cameras that do not have the control of the exposure of a DSLR. Nor do they offer interchangeable lenses or even have mirrors. They are simplistic cameras designed for the casual consumer. But don't let their simplicity fool you into thinking that they can't be used to created create images, because they can. It's just that they don't have the capabilities of the more advanced mirrorless or DSLR.
Cell phones do have some control over the exposure, but the control is greatly limited. The focusing of the $5 camera modules used in smartphones also do not have the flash, auto focus or shooting capabilities of mirrorless or DSLRs, too. Because of their simplistic design and lack of control, they greatly restrict the users technical and artistic choices when making a photograph. For these reasons, the camera modules used in smartphones is considered a point-and-shoot camera.