You can enable Night Mode on your iPhone camera in a few quick steps. Here’s how:

• Open the Camera app and switch to Photo mode.
• In low-light situations, you’ll see a moon icon labeled Night Mode at the top of the screen. Tap that icon to customize the exposure, or let it auto-activate when the scene is dark enough. The camera will use a longer exposure automatically to brighten the shot.
• If you want to override auto settings, tap the moon icon (Night Mode) and drag the exposure slider or choose Max to extend the capture time for extra light, then take your photo.

Display Night Mode for photos (iPhone display settings):

• Night Mode applies primarily to the camera. If you want a darker interface, you can switch your iPhone display to Dark Mode via Settings > Display & Brightness > Dark, which doesn’t affect Night Mode camera behavior but provides a system-wide dark appearance.

Tips for best results:

• Keep your iPhone steady on a flat surface or use a tripod to maximize the long-exposure benefits.
• If you’re shooting in very low light, enable Night Mode and aim for a longer exposure (Max) to gather more light.
• Turn off Live Photos when using Night Mode for sharper results in some situations.

If you’d like, tell me your iPhone model and iOS version, and I’ll tailor the steps precisely for your device.