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Mastering PhoneGap Mobile Application Development by Kerri Shotts

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The performance difference between desktop browsers, emulators, and physical devices

Although we are building a mobile application, it is common to run our app in a desktop browser or an emulator, especially while rapidly iterating on the code. Unless there is functionality that directly requires a physical device (the accelerometer for example), a lot of development work can be done well before the app ever sees a physical device.

While developing in this manner saves enormous time up front, it does mean that performance problems could often be overlooked until it is too late. Thus, it's a good idea to periodically run your app on physical devices that represent your target market in order to ensure that the performance remains acceptable.

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