How to Test iPhone Touch-screen Functionality

Verify iPhone Touchscreen Function

The touchscreen touch functionality can be tested in this two step process:
1. Launch the basic iPhone calculator application to test all but the top row of the screen and Press each button on the iPhone calculator to verify activity

2. To test the number readout area at the top of the screen, rotate the iPhone to launch the scientific calculator and press all the iPhone buttons in the left two rows

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