First thing you have to do is to pick a smartphone or tablet from our database. From its specs page, click on the "Size" tab to launch the Size Visualization Tool. Note that the first time you use the feature you'll get a message saying that your screen is not calibrated. The calibration process takes only about a minute or so and is a way of "telling" our system how big your screen is. Once you've completed the calibration process, the phones in the Size Visualization Tool will be displayed with their real-life dimensions.
Another new feature of our Size Visualization Tool is the Layered view, allowing you to "stack" smartphones one on top of the other for comparison's sake. Just hit the "View Layered" button below.