Remove the two Phillips #00 screws from the dock-connector end of the iPhone.
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Remove the metal handle from the suction cup. It's easier and safer to grip the suction cup's base instead of the metal handle.
Be very careful when opening the iPhone so that the cables under the display are not severed.
There is a rubber gasket between the silver front bezel and black display assembly. A bit of force is required in this step to separate the iPhone's display assembly.
Use a small suction cup near the Home button to gently pull up the bottom portion of the iPhone's display assembly.
If the display assembly is too damaged to allow the suction cup to adhere, tape with a strong adhesive such as duct tape may be used.
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The display assembly is still connected to the iPhone by several cables, so don't try to remove it entirely just yet.
Rotate the display assembly up until it is at an angle of approximately 45 degrees.
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Continue to hold the display assembly with one hand, and use your other hand and a spudger to disconnect the black ribbon cable labeled "1."
Be careful to insert the spudger from the left, as shown in the picture. If you try to pry up the ribbon from the right, you could damage the ribbon connector and need to replace the display!
All connectors except the ribbon connector mentioned in step 6 release upwards.
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Rotate the display assembly up until it is roughly vertical. This will allow easier access for disconnecting the remaining cables.
Use a spudger to disconnect the black ribbon cable labeled "2."
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Some iPhones may have the connector colors reversed (black plastic tab, white connector). Make sure you're flipping up the tab properly, otherwise you may damage the connector.
Use a spudger to flip up the white plastic tab holding the remaining ribbon cable in place. The white tab will rotate up 90 degrees, releasing the ribbon cable.
Slide the black ribbon cable out of its connector, and remove the display assembly from the iPhone.
Please note: You may find on some non-American (Chinese, European) versions of the 3G that the flip up plastic tab does not exist. In this case you would slide the ribbon cable towards the screen until it is removed. When you assemble it, you would apply pressure to the ribbon to insert it back into the ribbon "socket."
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Insert your SIM eject tool or a paper clip into the hole next to the headphone jack.
Press down on the tool until the SIM card tray pops out.
Grasp the SIM card tray and slide it out of the iPhone.
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Use a spudger to disconnect the ribbon cable labeled "4."
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Use a spudger to disconnect the ribbon cable labeled "5."
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Use a spudger to disconnect the ribbon cable labeled "6."
If you have an iPhone 3GS, refer to the second picture and use a spudger to disconnect the ribbon cable labeled "7."
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Carefully peel up the small sticker labeled "Do not remove."
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Remove the following 8 screws:
Five 2.3 mm Phillips #00 screws with partial threads securing the logic board to the rear panel.
Two 2.3 mm Phillips #00 screws with full threads securing the logic board and camera.
One 2.9 mm Phillips #00 screw from beneath the "Do not remove" sticker.
Note for re-assembly:
The screw that goes next to the camera (bottom right orange highlighted screw) also has a metal strip that holds the camera in place.
Remember to put this strip back in place before you insert the 2.3 mm Phillips #00 screws with full thread next to the camera
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Use a spudger to gently pry the camera up and out of its housing in the rear panel.
The camera cannot be removed entirely yet because it's connected to the bottom of the logic board.
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Use a spudger to gently pry up the end of the logic board closest to the dock connector.
If the board won't lift up, double check to make sure all the screws securing the logic board have been removed.
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Slide the logic board towards the dock connector and out of the iPhone.
When replacing the logic board after installing battery, connect the camera to the logic board before inserting it into the case. Then make sure to set the top section of the logic board (where the SIM tray is) in place before settling the rest of the board in place. This is important, as sometimes the SIM card slot will not align into place. Once the top section is in place, the bottom section can be maneuvered into place. You will know the logic board is correctly installed when the SIM tray is aligned with the opening in the iPhone case and the camera module seats neatly into its place.
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Use a spudger to pry the battery up from the rear panel. The battery is attached with an adhesive strip around the perimeter of the battery. To prevent the battery from bending during the removal process, we recommend against using just the plastic pull-tab .
The iPhone's battery is attached to the rear case with a mild adhesive. This adhesive usually comes out attached to the battery. If your replacement battery already includes an adhesive backing, you're all set. If your replacement battery doesn't have an adhesive backing, you'll want to transfer the adhesive from your old battery to the new one.
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Remove the following four screws:
Three 1.8 mm Phillips #00 screws securing the headphone jack and GPS antenna to the rear panel.
One 3.8 mm Phillips #00 screw in the plastic loop near the headphone jack.
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Remove the four Phillips #00 screws securing the volume and vibrate buttons.
The screw on the far right is slightly longer than the other 3 screws. When reassembling the phone, keep this in mind.
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Lift the volume button circuitry away from the side of the iPhone, and carefully peel up the orange ribbon cable from the rear panel.
Carefully pull the headphone jack away from the top edge of the rear panel.
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Gently pull the headphone jack electronics away from the side of the rear panel to reveal the plastic mute button.
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Gently pull the headphone jack electronics away from the side of the rear panel to reveal the plastic mute button.
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