Galaxy S21 sales reportedly even slower than Galaxy S20 - 9to5Google
The Samsung Galaxy S21 Ultra Finally Gets a Real QHD+ 120Hz Display - IGN
Which Samsung Galaxy S21 should you buy? Regular, Plus or Ultra?
The Galaxy S21 and S21+ are Samsung's new, more affordable flagships
Samsung Galaxy S21 in review: A more powerful and slightly improved version of the Galaxy S20 - Reviews
Samsung Galaxy S21 Thoughts and Impressions
Samsung Galaxy S21 review: Which Galaxy S21 you should buy? - Savincom
Forget the Galaxy S22 and get an S21: Main differences between S21, Plus and Ultra - CNET
Samsung Galaxy S21 review: Compact, but not weak - SamMobile
Galaxy S21 will be cheaper than the S20, while the S21 Ultra will be more expensive
Samsung Galaxy S22 Plus vs Galaxy S21 Plus: Upgrade or not? - PhoneArena
Samsung Unveils Its New Galaxy S21, S21+ & S21 Ultra Smartphones
Samsung Debuts Galaxy S21 Smartphones, With Lower Price Points - WSJ