When I was leaving work, I liked the clouds in the sky. I only had my iPhone, so I shot a burst of 8 images. My iPhone seems to have quite a bit of noise, so I  loaded them in Photoshop, put them in a layered file & converted them to a Smart Object layered stack.  Then used Stack Mode > Median to lower the noise level. Helps make my iPhone images more usable and lowers the noise a lot.