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Let's see what it looks like when we run our project through the iOS simulator. On the top left of the screen you'll see the name of your project, which in this case is Example. To the right of that my screen says, iPhone Retina 3.5-inch. That is the device that will show on my screen when I run my application by clicking the Play button. So I'm going to click iPhone Retina 3.5-inch, and you'll see that you can choose a whole bunch of different devices to test your application on.
I'm going to choose iPhone Retina 4-inch, and then I'm going to click the Run button. What this is going to do, is it's going to launch my application in the iOS simulator. Note that this may take a minute or two for the simulator app to launch. Once the simulator is launched, I see a blank, white screen. So, I know that my app is running in the iOS simulator. Now, it's possible that your screen may not look exactly the same as mine. Here are some options for modifying the preferences in the iOS simulator.
Under Hardware, you can change the device. Under Window, you can set the scale. Note that my scale is set to 50%. That might not be necessary for you if your monitor is running a higher resolution than mine is right now. So get those settings how you like them so you can see the full device on the screen. And then you've successfully configured the iOS simulator.
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