Specifications

iPhone 4 Symptom Charts — Mechanical Issues 47
2012-02-21
2. Check software response.
For volume up/down buttons,
test volume up and down.
For on/o button, test pressing
and holding down the
button for “slide to power o”
functionality.
For ring/silent switch, ip the
switch and verify Ringer bell
icon changes on screen.
For Home button, test single
and double clicks, and test hold
for “Voice control.” With display
o, press center of Home
button and verify that display
turns on. Repeat same test for
the top, bottom, left and right
edges of Home button (3, 6, 9,
12 in image at left). The display
should turn on when pressing
any of these 5 locations.
Are the buttons responding as
expected?
Yes Issue resolved.
No Go to step 3.
3. Erase all content and settings.
Go to Settings > General >
Reset > Erase All Content and
Settings.
Warning: This will delete all
user data on the device.
Is the button issue resolved?
Yes Issue resolved.
No Go to step 4.
4. Restore with iTunes.
Restore the device using
the latest version of iTunes.
If restore fails, attempt DFU
restore.
Is the button issue resolved?
Yes Issue resolved.
No
Determine if the issue is caused by
accidental damage. Refer to the Visual
Mechanical Inspection guidelines.
For iPhone 4S volume button issues,
try installing Volume Button Shim.