07.13.2021 20:Jul PM EDT Samsung Galaxy S21 Ultra Camera Is So Powerful: How to Activate 108-Megapixel Camera Plus 3 Tips and Tricks! The Samsung Galaxy S21 Ultra boasts an incredible camera with 108-megapixel sensor. Both professional and novice mobile phone photographers can appreciate all the features this smartphone's camera has to offer. Photo : Dia Dipasupil/Getty Images for Samsung The Samsung Galaxy S21 Ultra boasts an incredible camera with 108-megapixel sensor. Both professional and novice mobile phone photographers can appreciate all the features this smartphone's camera has to offer. With that said, here's how you can make the most of the Samsung Galaxy S21 Ultra 108-megapixel camera sensor.