... Z-axis, expressed as a number.timestamp — Timestamp for creation, expressed in milliseconds.This object is created and populated by PhoneGap, and returned by an accelerometer method. Following ... iPhone, Android, BlackBerry, or webOS phone and fi re up the native compass application. While the application is running, simply turn in different directions to display a heading.From a look -and- feel ... amount of information. For example, the compass in the iPhone 3GS (shown in Figure 7-1) offers a visual compass that tells you where north is, plus a readout in degrees and cardinal points (for example,...