iPhone 3GS Logic Board Replacement
The iPhone's central processing unit, a circuit board referred to as the motherboard, manages all device functions.
Step 1 | Broken Glass
To avoid injury and contain shattered fragments while you work, secure any cracked display glass with tape.
Completely cover the iPhone screen with overlapping strips of clear packing tape to protect the display surface.
To prevent glass fragments from scattering and maintain stability during the display separation process, this step is crucial.
To safeguard your eyes from potential glass fragments released during the repair process, always use safety glasses.
Completely cover the iPhone screen with overlapping strips of clear packing tape to protect the display surface.
To prevent glass fragments from scattering and maintain stability during the display separation process, this step is crucial.
To safeguard your eyes from potential glass fragments released during the repair process, always use safety glasses.
Step 2 | Logic Board
Using a Phillips #00 screwdriver, detach the two screws securing the dock connector.
Step 3
For improved handling and safety, detach the metal handle from the suction cup; gripping the suction cup's base directly is recommended.
Exercise extreme caution during iPhone disassembly to prevent damage to the delicate display cables.
A black display assembly is sealed to the silver front bezel by a rubber gasket; separation necessitates applying moderate pressure.
Carefully lift the lower edge of the iPhone's display assembly by applying gentle upward force with a small suction cup positioned close to the Home button.
To ensure proper attachment of the suction cup, if the display assembly's surface is compromised and prevents adhesion, secure it with a robust adhesive tape—options include duct tape or thick, clear packing tape—as a substitute.
Exercise extreme caution during iPhone disassembly to prevent damage to the delicate display cables.
A black display assembly is sealed to the silver front bezel by a rubber gasket; separation necessitates applying moderate pressure.
Carefully lift the lower edge of the iPhone's display assembly by applying gentle upward force with a small suction cup positioned close to the Home button.
To ensure proper attachment of the suction cup, if the display assembly's surface is compromised and prevents adhesion, secure it with a robust adhesive tape—options include duct tape or thick, clear packing tape—as a substitute.
Step 4
Several cables continue to secure the display assembly to the iPhone's internal components; avoid complete separation at this stage.
Tilt the display assembly upwards, achieving roughly a 45-degree angle.
Tilt the display assembly upwards, achieving roughly a 45-degree angle.
Step 5
Several cables continue to secure the display assembly to the iPhone's internal components; avoid complete separation at this stage.
Using one hand to secure the display assembly, employ a spudger with your other hand to carefully detach the ribbon cable identified as "1."
Using one hand to secure the display assembly, employ a spudger with your other hand to carefully detach the ribbon cable identified as "1."
Step 6
Adjust the display assembly's orientation to a near-vertical position to simplify the process of disconnecting the remaining cables.
Carefully detach the ribbon cable identified with the label "2" by using a spudger.
Carefully detach the ribbon cable identified with the label "2" by using a spudger.
Step 7
Employing a spudger, lift the 90-degree rotating white plastic tab to disengage the ribbon cable.
Carefully disconnect the black ribbon cable by sliding it from its connector, then detach the display assembly from the iPhone.
Carefully disconnect the black ribbon cable by sliding it from its connector, then detach the display assembly from the iPhone.
Step 8
Using a SIM eject tool or a straightened paper clip, gently push into the small aperture located adjacent to the headphone jack.
Apply pressure to the tool, ensuring it extends the SIM card tray until it disengages.
Using your fingers, carefully eject the SIM card tray from the iPhone by sliding it outward.
Apply pressure to the tool, ensuring it extends the SIM card tray until it disengages.
Using your fingers, carefully eject the SIM card tray from the iPhone by sliding it outward.
Step 9
Carefully detach the ribbon cable identified as "4" using a spudger.
Step 10
Carefully detach the ribbon cable identified as "5" using a spudger.
Step 11
Carefully detach the ribbon cable identified as "6" using a spudger.
For iPhone 3GS models, consult image 2 and employ a spudger to carefully detach the ribbon cable identified as "7".
For iPhone 3GS models, consult image 2 and employ a spudger to carefully detach the ribbon cable identified as "7".
Step 12
Exercise caution while lifting the adhesive label marked with the warning "Do not remove."
Step 13
Detach the component by disengaging eight fasteners.
The logic board is affixed to the rear panel using five screws; each is 2.3 mm in length, features a Phillips #00 head, and has partial threads.
The logic board and camera are fastened together using two screws; each is a full-thread Phillips #00 screw, measuring 2.3 mm in diameter.
Beneath the "Do not remove" sticker, locate and unscrew a Phillips #00 screw with a 2.9 mm head.
The logic board is affixed to the rear panel using five screws; each is 2.3 mm in length, features a Phillips #00 head, and has partial threads.
The logic board and camera are fastened together using two screws; each is a full-thread Phillips #00 screw, measuring 2.3 mm in diameter.
Beneath the "Do not remove" sticker, locate and unscrew a Phillips #00 screw with a 2.9 mm head.
Step 14
Carefully disengage the camera retaining clip—previously held in place by the screw you already removed—using a spudger, then gently lift the camera assembly from its position within the rear panel; note that the camera remains connected to the logic board at its base and is not yet fully detachable.
Step 15
Carefully lift the logic board's edge, near the dock connector, using a spudger to avoid damage.
Verify that each of the screws holding the logic board in place has been completely unscrewed if you encounter difficulty raising the board.
Verify that each of the screws holding the logic board in place has been completely unscrewed if you encounter difficulty raising the board.
Step 16
Carefully advance the logic board in the direction of the dock connector to disengage it from the iPhone's internal assembly.
Step 17
Carefully detach the camera module from the logic board using a spudger.