iPhone 3GS Headphone Jack Replacement

Introduction

No audio? Replace the headphone jack!

Tools:

• ? Phillips #00 Screwdriver
• ? Suction Handle
• ?️ Spudger

Parts:

• iPhone 3G/3GS Headphone Jack Assembly (1)

Step 1 - Broken Glass

If your display glass is cracked, keep further breakage contained and prevent bodily harm during your repair by taping the glass.

Lay overlapping strips of clear packing tape over the iPhone's display until the whole face is covered.

ℹ️ This will keep glass shards contained and provide structural integrity when prying and lifting the display.

⚠️ Wear safety glasses to protect your eyes from any glass shaken free during the repair.

Image Description: Three images showing a cracked iPhone screen, hands applying clear packing tape to the screen, and the taped screen.

Step 2 - Battery

Remove the two 3.7mm Phillips #00 screws from the dock-connector end of the iPhone.

Image Description: A hand holding the bottom of an iPhone, with two red circles indicating the location of two Phillips #00 screws near the dock connector.

Step 3

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.

ℹ️ 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. It may help to rock the suction cup back and forth to remove the display assembly.

Use a small suction cup near the Home button to gently pull up the bottom portion of the iPhone's display assembly.

ℹ️ If the display assembly is too damaged to allow the suction cup to adhere, tape with a strong adhesive such as duct tape or packing tape may be used.

Image Description: A hand is shown attaching a suction cup to the iPhone's screen near the Home button.

Step 4

ℹ️ 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.

Image Description: Hands are holding the iPhone, with the display assembly lifted and angled upwards at about 45 degrees.

Step 5

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". (Cable 1 is for the display)

⚠️ Be careful to insert the spudger from the left, as shown in the picture (UNDER THE RIBBON). If you try to pry up the ribbon from the right, you could damage the ribbon connector and need to replace the display!

ℹ️ All connectors except the ribbon connector "3" mentioned in step 7 release upwards.

Image Description: A hand holds the iPhone's display assembly while another hand uses a spudger to disconnect a ribbon cable.

Step 6

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". (Cable 2 is for the capacitative touch panel)

Image Description: The iPhone's display assembly is held vertically, and a spudger is used to disconnect a second ribbon cable.

Step 7

ℹ️ 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."

ℹ️ Some iPhones may have the connector colors reversed (black plastic tab, white connector) for connector "3". 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 ribbon cable "3" 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.

Image Description: A spudger is used to flip up a white plastic tab on a ribbon cable connector. The connector is highlighted.

Step 8

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.

Image Description: A hand is inserting a SIM eject tool into a small hole on the side of the iPhone, next to the headphone jack.

Step 9

Use a spudger to disconnect the ribbon cable labeled "4."

Image Description: A spudger is used to disconnect a ribbon cable labeled "4" from the logic board.

Step 10

Use a spudger to disconnect the ribbon cable labeled "5."

Image Description: A spudger is used to disconnect a ribbon cable labeled "5" from the logic board.

Step 11

Use a spudger to disconnect the ribbon cable labeled "6."

ℹ️ If you have an iPhone 3GS, refer to the second picture and use a spudger to disconnect the ribbon cable labeled "7."

ℹ️ Be certain that the connectors on the ribbon cables are perfectly aligned with the sockets on the motherboard before applying pressure. This may require a magnifying glass or jeweler's loupe.

Image Description: Two images. The first shows a spudger disconnecting a ribbon cable labeled "6". The second, labeled "3GS", shows a spudger disconnecting a ribbon cable labeled "7".

Step 12

Remove the following 8 screws:

• Five 2.3 mm Phillips #00 screws with partial threads securing the logic board to the rear case.
• 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 screw with full thread next to the camera.

Image Description: The iPhone's internal components are visible. Red circles indicate the locations of 8 screws to be removed. One screw location near the camera is highlighted in orange.

Step 13

Use a spudger to gently pry the camera up and out of its housing in the rear case.

⚠️ The camera cannot be removed entirely yet because it's connected to the bottom of the logic board.

Image Description: A spudger is used to gently lift the camera module out of its housing.

Step 14

Use a spudger to gently pry up the end of the logic board closest to the dock connector.

ℹ️ There is a small golden grounding tab on the logic board adjacent to the 'do not remove sticker'. Be VERY careful this does not snag on the side of the case when prying up the logic board; it breaks easily. If you have signal problems after removing the logic board, check this ground tab.

ℹ️ If the board won't lift up, double check to make sure all the screws securing the logic board have been removed.

Image Description: A spudger is used to pry up the logic board near the dock connector.

Step 15

Slide the logic board towards the dock connector and out of the iPhone.

When replacing the logic board after installing the 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.

Image Description: A hand is sliding the logic board out of the iPhone.

Step 16

Use a spudger to pry the battery up from the rear case. The battery is attached with an adhesive strip around the perimeter of the battery.

ℹ️ To prevent the battery from bending during the removal process, we recommend against using just the plastic pull-tab.

ℹ️ Removing the battery is NOT necessary for replacing the GPS antenna. It merely gives you more space for removing the headphone assembly (which is also unnecessary to completely remove).

ℹ️ 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.

⚠️ If the battery isn't detaching from the rear case, apply a few drops of high concentration (over 90%) isopropyl alcohol under the edge of the battery. Wait about one minute for the alcohol solution to weaken the adhesive. Use the flat end of a spudger to gently lift the battery. Allow the alcohol to air dry before installing your new battery.

⚠️ Don't try to forcefully lever the battery out. If needed, apply a few more drops of alcohol to further weaken the adhesive. Never deform or puncture the battery with your pry tool.

ℹ️ You can use a hair dryer or heat gun on its lowest setting to heat the back of the case. This will help loosen the adhesive bond before using the spudger to separate the battery from the case back.

⚠️ Caution: Overheating the iPhone may ignite the battery.

Image Description: A hand is using a spudger to pry the battery out of the iPhone's rear case.

Step 17 - Headphone Jack

Remove the two Phillips #00 screws securing the on/off switch to the front bezel.

ℹ️ When replacing, check the protrusion of the switch. There is a small plastic spacer adhered to the inside of the button which may come off with cleaning. Without a spacer, the button may not protrude enough to be depressed. If lost, it can be replaced with a suitable thickness of stiff plastic (e.g., shirt box lid).

Image Description: Two red circles highlight two Phillips #00 screws securing the on/off switch to the front bezel.

Step 18

Carefully peel up the orange ribbon cable from the rear case.

⚠️ The ribbon cable is easily damaged - be very gentle.

Image Description: A hand is carefully peeling up an orange ribbon cable from the rear case of the iPhone.

Step 19

Remove the following 4 screws:

• Three 1.8 mm Phillips #00 screws securing the headphone jack and GPS antenna to the rear case. Note the order in which you remove the screws, as the left one has a slightly larger head.
• One 3.8 mm Phillips #00 screw in the plastic loop near the headphone jack.

Image Description: Four red circles indicate the locations of screws to be removed around the headphone jack and GPS antenna area.

Step 20

Remove the four Phillips #00 screws securing the volume and mute switch.

ℹ️ The volume switch assembly sits on top of the mute switch. Make sure that the small soft pad on the mute switch is not lost, otherwise the mute switch will sit very loosely after reassembly.

The mute switch assembly screws should be tightened with the switch in the off position. Check the protrusion of the switch when turned on, since it may not stick out far enough to operate if the switch assembly is incorrectly positioned. (Check the gap between the switch frame and the bezel (white gap showing between the two screws near the 6). The screw on the far right is slightly longer than the other 3 screws. When reassembling the phone, keep this in mind.

Image Description: Four red circles indicate the locations of screws securing the volume and mute switch assembly.

Step 21

Lift the volume button circuitry away from the side of the iPhone, and carefully peel up the orange ribbon cable from the rear case. The cable is thin and easily damaged.

Image Description: A hand is lifting the volume button circuitry and peeling up an orange ribbon cable from the side of the iPhone.

Step 22

Carefully lift the headphone jack assembly out of the iPhone.

Switch the green mute switch down (towards the back side of the iPhone) into mute position. This will make it much easier to insert it, once the new mute button is in place.

Image Description: A hand is carefully lifting the headphone jack assembly out of the iPhone. The mute switch is shown.

Reassembly

To reassemble your device, follow these instructions in reverse order.