When designing an app for use on both smartphones and tablets, the screen size doesn't matter since all the content will scale automatically.

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Quizplus · Accepted Answer

While some elements may scale automatically, it is important to consider the differences in screen size and layout when designing for both smartphones and tablets. Users will have different interactions with the app and may expect different features or layouts depending on the device they are using.

When Designing an App for Use on Both Smartphones and Tablets