Q: iPhone 6s Noisy Photos in low light.

Hello there, JohnAsksWhy.

It sounds like you are having quality issues with the photos you are taking with your iPhone 6s. Some great troubleshooting steps are offered in the following Knowledge Base article:

Get help with the camera on your iPhone, iPad, or iPod touch

These initial steps, although referenced for closed lens/black screen issue, are great for resetting the Camera application itself:

1. Make sure that there’s nothing blocking the camera lens. If you’re using a case, try removing it.
2. Force the app to close, then open the Camera app again.
3. Restart your device, then open the Camera app again.

If the issues persist, then proceed with the following:

Your photos are blurred or out of focus

If your photos are blurred, out of focus, or have dark spots, try these steps:

1. Make sure that the camera lens is clean. If you need to clean the lens, use a microfiber cloth. If you see dirt or debris inside the lens, take your device to an Apple Retail Store or Authorized Service Provider for more help.
2. With iPhone 6 Plus and iPhone 6s Plus, a metallic case or magnetic lens could interfere with optical image stabilization. Try taking a picture without it, then compare the quality.
3. Adjust the focus by tapping on the person or object in the preview screen. You’ll see the screen pulse or briefly go in and out of focus as the camera adjusts. In photo mode, try to stay steady when adjusting the focus. If you move too far in any direction, the camera will automatically refocus to the center. In video mode, you can adjust the focus before you begin recording.

If you still have issues with the focus on your camera, contact Apple Support.

Thanks for reaching out to Apple Support Communities.

Cheers.