Specifications

iPhone 4 Symptom Charts — Connectivity Issues 60
2012-02-21
2. Verify device presence in
iTunes.
Connect the device to user’s
computer (if available) and see
if it is recognized in iTunes.
If user’s computer is not
available, select the “No”
answer.
Does iTunes recognize the
device?
Yes Go to step 3.
No Go to step 5.
3. Test with known-good
computer.
Connect the device to a
known-good computer running
the latest version of iTunes and
see if the device is recognized
in iTunes.
Does iTunes recognize the
device?
Yes User needs to reinstall iTunes and/or
troubleshoot issue with computer.
No Go to step 4.
4. Put device into recovery
mode.
Put the device into recovery
mode and reconnect to known-
good computer. Verify if the
device is now recognized in
iTunes.
Does iTunes recognize the
device?
Yes Go to step 7.
No Determine if the issue is caused by
accidental damage. Refer to the Visual
Mechanical Inspection guidelines.
5. Sync with iTunes.
Attempt to sync the device
with iTunes.
Was the sync successful?
Yes Issue resolved.
No Go to step 6.
6. 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.
Attempt to sync the device
with iTunes.
Was the sync successful?
Yes Issue resolved.
No Go to step 7.