Specifications

iPhone 4 Take Apart — General Information 85
2012-02-21
General Information
Before You Begin
• IMPORTANT: Refer to the Visual Mechanical Inspection guidelines to determine if the
device has any accidental damage. Check for Liquid Contact Indicator (LCI) activation
externally (in headset jack and dock connector) before opening the device.
• Remove any cases or screen protectors, which may inhibit proper testing.
• Verify the user-reported symptom(s) and identify the correct part(s) needed for repair.
• Make sure the device is powered o (red slider).
Electrostatic Discharge Precautions
Proper ESD precautions must always be used when opening an iPhone 4. Make sure you are
working on a properly grounded ESD-safe mat and are wearing a properly connected ESD-safe
wrist strap.
For more information about ESD, refer to:
• Apple Support article HT3451: Electrostatic Discharge Precautions and Myths
• AppleCare Service Training: ESD Precautions
Required Tools
The following tools are required to service an iPhone 4:
• ESD-safe wrist strap
• ESD-safe workstation
• SIM Removal Tool (922-8417) or paperclip (size #1)
• iPhone Torque Driver (923-0031)
• iPhone Torx Security Bit (922-9627)
• JCIS #00 Bit (922-9947) for cross-head screws
• iPhone 4 Dock Screws 10 Pack (922-9603)
• iPhone 4 Battery Fixture (923-0075)
• Nylon Probe Tool (black stick) (922-5065)
• ESD-safe tweezers
• Motorola DS6707 Scanner (922-9230) for iPhone 4 (GSM model) serial barcode
• Packing tape (provides a smooth surface for removal of a damaged back cover)
• Micro-ber polishing cloth