A wide-angle lens on a smartphone camera typically has a larger field of view compared to a telephoto lens. This means that a wide-angle lens can capture more of a scene in a single frame, making it ideal for taking landscape shots, group photos, and architectural photography.
On the other hand, a telephoto lens offers a narrower field of view, allowing you to zoom in on distant subjects without losing image quality. This makes it perfect for photographing subjects that are far away, such as wildlife, sports events, or concerts.
In summary, the main difference between the field of view of a wide-angle lens and a telephoto lens on a smartphone camera lies in their ability to capture a wider or narrower area respectively. Each type of lens has its own strengths and is suited for different types of photography.