Specifications

iPhone 4 Symptom Charts — Connectivity Issues 63
2012-02-21
Bluetooth Issues
Known-Good Parts & Materials Required: Bluetooth accessory, Dock Connector to USB Cable,
computer running the latest version of iTunes with a known-good USB port
Quick Check
Symptoms Quick Check
• Bluetooth accessory not
recognized
• Bluetooth accessory not pairing
• Settings > General > Bluetooth
is grayed out
1. Verify that the Bluetooth accessory’s package
indicates “Works with iPhone.”
2. On the device, go to Settings and turn Airplane
Mode on for 15 seconds, then o. This resets all
wireless connections on the device.
3. Restart the device.
4. Reset the Bluetooth accessory.
5. 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. Test device’s Bluetooth.
Go to Settings > General >
Bluetooth and verify that you
can power Bluetooth on/o.
Does Bluetooth successfully
turn on and o?
Yes Go to step 3.
No Go to step 2.
2. Restore with iTunes.
Restore the device using
the latest version of iTunes.
If restore fails, attempt DFU
restore.
Warning: This will delete all
user data on the device.
Go to Settings > General >
Bluetooth and verify that you
can power Bluetooth on/o.
Does Bluetooth successfully
turn on and o?
Yes Go to step 3.
No Determine if the issue is caused by
accidental damage. Refer to the Visual
Mechanical Inspection guidelines.