Specifications
iPhone 4 Verication Testing — Functional Testing 185
2012-02-21
Test GPS
iPhone uses signals from GPS satellites, Wi-Fi hot spots, and cellular towers to get the most
accurate location. If GPS is available, the location indicator will be a blue ball. GPS testing
requires line of sight to the sky for a satellite lock.
1. Go to Settings > Wi-Fi and connect to a known-good Wi-Fi network.
2. Launch Maps app and tap the arrow button in the lower left corner of the screen. Maps
should show your current location.
Test Compass
Maps uses the built-in compass to determine your heading. The angle shows the accuracy of
the compass reading—the smaller the angle, the greater the accuracy.
1. Move to a location away from magnetic elds.
2. Go to Settings > Wi-Fi and connect to a known-good Wi-Fi network.
3. Recalibrate Compass by waving iPhone in a gure-eight motion.
4. Launch Maps app and tap the arrow button in the lower left corner of the screen. Tap the
arrow button again to activate the compass.
5. Verify that when iPhone is rotated, the heading shown on screen adjusts accordingly.