Planets look like bright stars to the naked eye, but a phone camera can reveal more than your eye can. Jupiter shows up as a small disk with tiny companion dots, its four largest moons. Saturn glows warm and steady. Mars burns orange-red. None of this needs a telescope, but it does need a little technique, because phone cameras are built for daylight, not for faint points of light in a dark sky.

Start with a clear, dark night and a planet that is high in the sky, not hugging the horizon where haze and turbulence blur everything. Jupiter and Venus are the easiest first targets because they are bright and forgiving. Saturn is dimmer but unmistakable once you know where to look. Mars is best near opposition, when it is closest to Earth and brightest; at other times it is small and disappointing even in a telescope.

Use a free planetarium app to find your target before you go outside. Point your phone at the sky and the app labels what you are seeing. This step saves more failed photos than any camera setting, because the most common beginner mistake is photographing a bright star and wondering why it never resolves into a disk.