为给定的2个产品进行比较，写一个产品比较报告。

iPhone 12 vs. Samsung Galaxy S21
The iPhone 12 and Samsung Galaxy S21 are both excellent smartphones. The iPhone 12 has a sleek design, a powerful A14 Bionic chip, and an excellent camera. However, the Samsung Galaxy S21 has a larger display, a more versatile camera system, and an expandable storage option. Ultimately, the choice between these two devices will come down to personal preference and priorities.