Specifications

iPhone 4 Symptom Charts — Mechanical Issues 46
2012-02-21
Mechanical Issues
Button Issues
Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running
the latest version of iTunes with a known-good USB port
Quick Check
Symptoms Quick Check
• on/o button not working
• ring/silent switch not working
• Volume up/down buttons not
working
• Home button not working
1. Restart the device.
2. On the device, go to Settings > General >
Software Update to verify device has the most
up-to-date software. If unavailable, verify by
plugging the device into iTunes.
Deep Dive
Check Result Action
1. Check physical response.
Verify that the button/switch
isn’t recessed or sticky and that
there is no debris blocking its
use.
Does the button physically
respond as it should?
Yes Go to step 2.
No Determine if the issue is caused by
accidental damage. Refer to the Visual
Mechanical Inspection guidelines.