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Iphone 4 CDMA Display Replacement Guide Iphone 4 CDMA

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Iphone 4 CDMA Display Replacement Guide Iphone 4 CDMA iTech Training Courses iPhone 4 CDMA Display Replacement Guide iPhone 4 CDMA ©2014 iCracked, Inc. All rights reserved. iOS, all Apple product names, and Apple logos are trademark property of Apple, Inc. The content of this training is for iTech training within iCracked, Inc. Users of this training program are not permitted to copy, sell, reproduce, distribute, or otherwise share this content, either in part or as a whole, with others. Misuse of the content of this training will be viewed as a violation of any license or employment agreement with iCracked. iPhone 4 CDMA ESD SAFETY! iCracked likes to stay on the safe side of repairs, and by using ESD (Electrostatic Discharge) safe tools and equipment, you can be sure to avoid static damage to your mobile device. ESD damage is difficult to diagnose as its effect isn’t usually immediately apparent, but sensitive sections of the logic board can nevertheless get weakened by static, and in turn become non-functional over time. Whether you are replacing a touch screen digitizer or an LCD screen, doing your repair with ESD safety in mind can save the long-term circuitry and functionality of your device. iPhone 4 CDMA EYE SAFETY! It is important that you understand that Safety glasses should be worn when working on any iOS device. Eye injuries are very common. Every day an estimated 1,000 people suffer an eye injury at work. Approximately 10% of these injuries are severe enough to require days away from work to recover. While the financial cost of these injuries are substantial, no dollar figure can adequately reflect the personal toll these incidents take on the injured employee. iPhone 4 CDMA GLOSSARY GSM - Acronym for Global System for Mobile Communica- SIM Card - Subscriber Identity Module is an on-board tion. It is another network standard (like CDMA) used by memory card that identifies a user. You can swap GSM carriers such as T-Mobile and AT&T. SIM cards between handsets. Home button - The physical button that is found on the Digitizer - Thin capacitive touch film on glass that converts bottom of the iPhone screen. analog touch signals to digital reactions by the processor. Power/Sleep/Wake Button – Located at the top of the Capacitive Touch - Screens that use a layer of capacitive iPhone. Long press turns on from being powered off. material to hold an electrical charge; touching the screen When powered on, a quick tap will wake the screen and changes the amount of charge at a specific point of light up the LCD. When in-use a quick tap will place the contact. In resistive screens, the pressure from your finger unit in sleep mode, turning off the LCD and digitizer. causes conductive and resistive layers of circuitry to touch iOS - Apple’s Operating System that runs mobile devices. each other, changing the circuits’ resistance. It has many versions, like iOS 2, 3, and 4. Standoff Screw - A standoff is a threaded separator of Ambient Light Sensor – Detects the amount of UV light defined length used to raise one assembly above another. and dims the LCD for best viewing. iPhone 4 CDMA TOOLS AND PARTS Tools Required: Parts Needed: • ESD-Safe Nylon Spudger • Replacement Display Assembly • ESD-Safe Tweezers • Proximity Cover Foam • ESD-Safe #00 Phillips Screwdriver • Display Adhesive set • ESD-Safe 1,8x40 Flat Head screwdriver • iPhone Pentalobe Screwdriver • Phillips #000 • iSesamo or Plastic opening tool • Metal Spudger iPhone 4 CDMA MODEL NUMBERS CARRIER CAPACITY BLACK WHITE Verizon (CDMA) 8 GB MD146LL/A MD200LL/A Verizon (CDMA) 16 GB MC676LL/A MC677LL/A A1349 Verizon (CDMA) 32 GB MC678LL/A MC679LL/A iPhone 4 CDMA IDENTIFY DEVICE NOTE: The iPhone 4 CDMA is the only iPhone that does not have a SIM card tray or a SIM card. iPhone 4 CDMA IMPORTANT! • Before working on any iOS device, make sure to test all of the functions that are described in the iTech app. • Power off the device before performing any repairs! • If you have any questions before starting a repair, contact your iTech manager or the SOS Hot line at 855-442-7225. iPhone 4 CDMA REPAIR PREP Use the iTech application to complete the Pre-Repair checklist; this checklist must be completed and verified by the customer prior to starting the repair. The pre-repair checklist is your way of provid- ing proof of what did or did not function prior to repair, which is why its so important to use the app and have the customer verify and sign. NOTE: An easy way to test the proximity sensor is activate voice control and start talking. If you place a finger over the ambient light sensor hole just above ear speaker grill, the screen should go dim. iPhone 4 CDMA POWER DOWN TO BEGIN Hold the power/sleep button down until “slide to power off” shows up on the screen. Slide the arrow from left to right. If the digitizer is not functioning: Power off the iPhone by holding down both the power/sleep button and the home button. Continue holding down as the Apple™ logo appears until the screen goes black. If the power button does not function: Using assistive touch, tap the white bubble > Device > press and hold “Lock Screen” until the “slide to power off” drops down, and then slide the arrow from left to right. iPhone 4 CDMA step Remove Dock Screws 1 Remove the two Pentalobe or Phillips screws located on the left and right side of the dock connector port. NOTE: Some iPhone 4 GSM have Phillips Head screws instead of Pentalobe screws. QTY MATERIAL 2 3.6 mm Pentalobe screw iPhone 4 CDMA step Slide Back 2 Slide the rear panel toward the top of the iPhone until it stops, then lift to remove. iPhone 4 CDMA step Remove Back 3 Completely lift off and remove the rear panel and set aside. iPhone 4 CDMA step Disconnect Battery 4 Remove the single Phillips head screw holding the battery connector in place. NOTE: Disconnect the battery connector before lifting the battery in order to prevent any possible electrical damage to the iPhone. QTY MATERIAL 1 1.5 mm Phillips screw iPhone 4 CDMA step Disconnect Battery 5 Use the flat end of the nylon spudger to lift between the battery and battery connector. Gently lift the connector upward using the battery as leverage. iPhone 4 CDMA step Remove Battery 6 Lift the plastic pull tab to remove the battery. NOTE: If the plastic pull tab breaks or is missing, use the flat end of the nylon spudger to gently pry out the battery by inserting the spudger between the lower outside corner of the battery and the frame, and lifting. iPhone 4 CDMA step Set Pull Tab 7 If it is still there, fold the plastic pull-tab over and stick it to the adhesive remaining on the frame to keep it from getting in your way during the repair. iPhone 4 CDMA step Five Screws 1. Remove the five screws 8 2. holding the EMI shield in place. DO NOT remove the shield. 3. 1. # QTY MATERIAL 1 3 1.3 mm Phillips screw 2 1 1.5 mm Phillips screw 1. 3 1 2.4 mm Phillips screw iPhone 4 CDMA step Rotate EMI Shield 9 Rotate clockwise from the upper edge of the shield to unlatch the bottom retaining bracket. iPhone 4 CDMA step EMI Tabs 10 Pull the bottom tabs of the EMI shield out from the slots cut into the mid-plate of the logic board. You may then remove the EMI shield from the phone. iPhone 4 CDMA step Wi-Fi Shield 11 Remove the single 1.5mm Phillips screw holding the Wi-Fi EMI shield in place. QTY MATERIAL 1 1.5 mm Phillips screw iPhone 4 CDMA step Remove Shield 12 Using tweezers, remove the Wi-Fi EMI shield clip by lifting upward on its larger end. iPhone 4 CDMA step Flex Cable Screws 13 Remove the two dock connector flex cable retaining plate screws and the plate. QTY MATERIAL 2 1.8 mm Phillips screw iPhone 4 CDMA IMPORTANT! When disconnecting the flex cables that are plugged into the logic board take your time and look. You can easi- ly render a logic board irreparable by knocking Carefully look closely off small components at each connector and on the logic board. lift with the spudger only on the underside of the cable cap. iPhone 4 CDMA step Disconnect Charging Port 14 Use the pointed end of the nylon spudger to lift the connector on the side closest to the lower shield. Peel back until adhesive is free then roll outward as shown. CAUTION: The charging port flex cable is held in place with adhesive. Be gentle when pulling it off as you don’t want to tear the cable. iPhone 4 CDMA step Remove Antenna Plate 15 Remove the single screw holding the service antenna retaining plate in place. Use tweezers to lift and remove the service antenna retaining plate. QTY MATERIAL 1 1.6 mm Phillips screw iPhone 4 CDMA step Disconnect Antenna 16 Use the pointed end of the Spudger to disconnect the antenna connector. iPhone 4 CDMA step Reposition Antenna 17 Gently reposition the service antenna from the installed EMI shield so that you may freely work on the logic board. iPhone 4 CDMA step Disconnect Rear Camera 18 Use the pointed end of the nylon spudger. Slide the spudger underneath the flex cable approximately 2mm and lift upward to disconnect the rear-facing camera from the logic board as shown.
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