Specifications

iPhone 4 Symptom Charts — Sound Issues 73
2012-02-21
Deep Dive
Check Result Action
1. Clean the device.
Check that speaker or receiver
mesh are not obstructed with
lint or debris. Attempt to clean
any debris in accordance with
the Cleaning Procedures.
Are you able to clean the
device?
Yes Go to step 2.
No Determine if the issue is caused by
accidental damage. Refer to the Visual
Mechanical Inspection guidelines.
2. Retest the device.
Play known-good media or go
to Settings > Sound > Ringtone
and select a ringtone.
Is the audio issue resolved?
Yes Issue resolved. User’s audio is
corrupted.
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.
Play known-good media or go
to Settings > Sound > Ringtone
and select a ringtone.
Is the audio issue resolved?
Yes Issue resolved. User’s audio is
corrupted.
No Go to step 4.
4. Restore with iTunes.
Restore the device using
the latest version of iTunes.
If restore fails, attempt DFU
restore.
Play known-good media or go
to Settings > Sound > Ringtone
and select a ringtone.
Is the audio issue resolved?
Yes
Issue resolved. Software corruption on
the device. Advise user to set up the
device as new, following instructions
in Apple Support article HT4137: How
to back up your data and set up as a
new device.
No Determine if the issue is caused by
accidental damage. Refer to the Visual
Mechanical Inspection guidelines.