Samsung announces Galaxy S21 series, including 8K capable, 108MP Galaxy S21 Ultra: Digital Photography Review
Differences between Galaxy S21 models
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Your guide to Samsung's Galaxy S21, S21+, S21 Ultra 5G, and S21 FE 5G smartphones
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Samsung Galaxy S21, S21 Plus, and S21 Ultra first look: polished design (and prices) - The Verge