Standalone cameras will normally have a optical zoom, whereby the lens extends and twists to magnify in on a subject.
They will too have a digital zoom, whereby it digitally zooms into the image further. This is what is found on smartphones.
Where possible do not use digital zoom, get closer to the subject or take the picture from further away and then crop it. You do not have to but you get best results this way.
Digital zooming has its place but on a smartphone due to the lower quality camera lens the image will often look really grainy.