Although you can run iPhone apps on the iPad, iPhone apps won't use up the full screen of the iPad, as shown in Figure 12-6.
However, you can expand an iPhone app so it fills up the entire iPad screen. Just tap the 2x button in the bottom-right corner of the iPad screen to blow up an iPhone app as shown in Figure 12-7.
To shrink an expanded iPhone app screen back to its normal size, tap the 1x button in the bottom-right corner of the screen.
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