Specifications

iPhone 4 Symptom Charts — Connectivity Issues 61
2012-02-21
7. Recovery mode restore.
Restore the device in recovery
mode using the latest version
of iTunes. If recovery mode
restore fails, attempt DFU
restore.
Attempt to sync the device
with iTunes.
Was the sync successful?
Yes Issue resolved.
No Escalate with your usual technical
escalation process.
Wi-Fi Issues
Known-Good Parts & Materials Required: Wi-Fi network, Dock Connector to USB Cable,
computer running the latest version of iTunes with a known-good USB port
Quick Check
Symptoms Quick Check
• Unable to locate a nearby Wi-Fi
network
• Unable to connect to a Wi-Fi
network
• Unable to access the Internet
• Settings > Wi-Fi is grayed out
1. On the device, go to Settings and turn Airplane
Mode on for 15 seconds, then o. This resets all
wireless connections on the device.
2. Restart the device.
3. 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.
4. Verify that a third-party case is not interfering
with antennas. Remove any installed third-party
case and retest.
5. Refer to Apple Support article TS1398: iOS:
Troubleshooting Wi-Fi networks and
connections.
6. Verify that Wi-Fi is enabled and that device is
connected to a known-good Wi-Fi network.
7. Check Wi-Fi signal strength. If low, move closer to
Wi-Fi router or hotspot.
8. Reminder: If the network is closed or private, you
must select “other...” and enter the network name
to join.