Samsung added a dedicated Night mode to the camera app of the Galaxy S10 trio last month (April 2019). It was a much-needed addition since several competing smartphones were getting better and better at nighttime photography. However, early results weren’t so impressive, or at least not up to the mark users were expecting. Samsung was surely taking note of it and has now (May 2019) released another update significantly improving the Night mode’s performance.
https://www.sammobile.com/2019/05/24/galaxy-s10-update-night-mode-widely-available