Thanks for the amazing tips @Xtramoney . You and @crissibeth make such a good team when it comes to mobile photography.
Here’s a low-light photo I took of the Golden Gate Bridge with my Samsung S9+:
I had to take like 20 photos before I got the perfect shot. I played a bit with ISO, white balance and exposure. I also helped myself with a fence to keep the phone super still! And here is the final result 
Any advice on how to make it better next time?