Specifications
iPhone 4 Verication Testing — Functional Testing 188
2012-02-21
3. Change the focus area and set exposure: A rectangle on the screen shows the area where
camera is focusing the shot. Tap the screen to focus on the circle of the Test Image. The
camera automatically adjusts the exposure for the selected area.
4. Zoom in or out (camera mode only): Pinch the screen, then use the slider at the bottom of
the screen to zoom in or out.
5. Set LED ash mode (camera or video mode): Tap the ash button in the upper left corner
of the screen, then tap On.
• If available, take the photo in a dim or darkened area to show where the ash is
lighting.
• Make sure ash is lighting the circle in the Test Image and is not shifted to one side.
Adjust Main Camera and LED
The main camera can be knocked out of alignment by removing and reinstalling the back
cover. Adjustment can be made by gently pushing the main camera module in the direction
needed for proper alignment.
Important: Do not touch the lens of the main camera with bare ngers. Only touch the
surrounding area or use gloves to ensure debris or ngerprints are not transferred to the
camera lens.
Clean Main Camera
1. Use a clean microber polishing cloth to remove smudges from the camera lens and the
back cover lens.
2. Check the back cover lens for scratches that could aect image quality.
Test Front Camera
1. Launch the Camera app. Tap the icon of a camera with two arrows in the upper right corner
of the screen.
2. Using a printed color copy of the Test Image (last page of this guide), ll the screen with the
Test Image. To take a photo, tap the camera button at bottom center of screen.
3. Verify the primary colors are representative of the printed Test Image and no dark spots are
near the edges of the photo.
Note: Resolution of the front camera is dierent than the main (rear) camera. Also, the front
camera does not have a ash.