How do I take screenshots on my iPhone or Android device?

To take a screenshot of your app's screen on your iOS device (iPhone or iPad):
Press and hold the power button on the right side of your iPhone (or the top of your iPad) and press the Home button at the exact same time. The screen will flash white and you'll hear the camera shutter sound (if your sound is enabled). The screenshot will be saved to your photo library. For older models of the iPhone, the power button may be at the top.

To take a screenshot of your app's screen on an Android phone:
Press and hold the power button and volume-down button for a couple of seconds. The screenshot will be saved to your photo library.