Since the release of the new Galaxy S22 series, the S21 is no longer the most advanced model in Samsung’s flagship lineup. But for tons of people, this previous-gen Galaxy phone still works just fine, and if you’d like to keep it that way, you should make sure it’s protected with a case. However, Galaxy S21 comes in three sizes, so you’ll need to make sure that you’re getting a case designed for your specific model.
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