iPhone 4S Upper Antenna Replacement

Walter Galan 和 8 其他贡献者

最后更新于 May 7, 2024

1 - 2 小时

困难

简介

转到步骤 1

Use this guide to replace your iPhone's upper antenna.

你所需要的

当你通过这些链接购买商品时，iFixit 会赚取佣金。

步骤 1 Rear Panel

iPhone 4S Upper Antenna Replacement, Rear Panel: 步骤 1 中的图像 1，1

Before you begin, discharge your iPhone battery below 25%. A charged lithium-ion battery can catch fire and/or explode if accidentally punctured.
Power off your iPhone before beginning disassembly.
Remove the two 3.6 mm Pentalobe P2 screws next to the dock connector.
Be sure the driver is well-seated when removing Pentalobe screws—they are easy to strip.

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步骤 2

Push the rear panel toward the top edge of the iPhone.
The panel will move about 2 mm.

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步骤 3

Pull the rear panel away from the back of the iPhone, being careful not to damage the plastic clips attached to the rear panel.
Remove the rear panel from the iPhone.

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步骤 4 Battery

iPhone 4S Upper Antenna Replacement, Battery: 步骤 4 中的图像 1，2

iPhone 4S Upper Antenna Replacement, Battery: 步骤 4 中的图像 2，2

Remove the following screws securing the battery connector to the logic board:
One 1.7 mm Phillips screw
One 1.5 mm Phillips screw

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步骤 5

iPhone 4S Upper Antenna Replacement: 步骤 5 中的图像 3，3

Carefully push the pressure contact away from the battery connector until it slides free from its position.
Remove the pressure contact.

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步骤 6

iPhone 4S Upper Antenna Replacement: 步骤 6 中的图像 3，3

Use a plastic opening tool to gently pry up the battery connector from its socket on the logic board.
Place the tip of the tool between the loudspeaker enclosure and the metal cover of the connector, and lift the bottom edge of the connector first.
The battery connector comes off vertically from the logic board. Do not apply force sideways.
Be careful not to pry at the battery connector socket itself, or it may detach from the logic board. There are four very small solder points awaiting this mistake!

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步骤 7 Reassembly tip

iPhone 4S Upper Antenna Replacement, Reassembly tip: 步骤 7 中的图像 1，2

iPhone 4S Upper Antenna Replacement, Reassembly tip: 步骤 7 中的图像 2，2

During reassembly, be sure to carefully position the pressure contact back in place. It should rest on top of the Philips screw post shown, and the gold contact should point towards the battery connector.
Be sure to clean the pressure contact with a degreaser such as windex or isopropyl alcohol. The oils on your fingers have the potential to create wireless interference.

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步骤 8

Insert the edge of a plastic opening tool between the battery and the outer case near the bottom of the iPhone.
Run the plastic opening tool along the right edge of the battery and pry up at several points to completely separate it from the adhesive securing it to the outer case.
If the adhesive is too strong, 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 plastic opening tool to gently lift the 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.
If there's any alcohol solution remaining in the phone, carefully wipe it off or allow it to air dry before installing your new battery.

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步骤 9

Use the exposed clear plastic pull tab to peel the battery off the adhesive securing it to the iPhone.
Be careful not to pull the plastic pull tab too hard as it can be ripped off very easily.
Remove the battery.
If your replacement battery came in a plastic sleeve, remove it before installation by pulling it away from the ribbon cable.
If your replacement battery came with an uncreased cable, carefully crease the cable into the proper shape before installing the battery into the phone.
While installing the replacement battery, temporarily connect the battery connector to the phone to ensure proper alignment. Once the battery is glued in place, disconnect the battery connector.
Perform a hard reset after reassembly. This can prevent several issues and simplify troubleshooting.

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步骤 10 Dock Connector Cable

iPhone 4S Upper Antenna Replacement, Dock Connector Cable: 步骤 10 中的图像 1，2

iPhone 4S Upper Antenna Replacement, Dock Connector Cable: 步骤 10 中的图像 2，2

Remove the following screws securing the dock connector cable cover to the logic board:
One 1.5 mm Phillips screw
One 1.2 mm Phillips screw
Remove the metal dock connector cable cover.

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步骤 11

Use the edge of a plastic opening tool to pry the dock cable up from its socket on the logic board.

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步骤 12

Peel the dock connector cable off the adhesive securing it to the logic board and the side of the speaker enclosure.

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步骤 13

Use the edge of a plastic opening tool to pry the cellular antenna cable up from its socket on the logic board.
De-route the cellular antenna cable out from under the metal fingers attached to the logic board.

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步骤 14 Rear Camera

iPhone 4S Upper Antenna Replacement, Rear Camera: 步骤 14 中的图像 1，1

在这个步骤中使用的工具：

Tweezers

$4.99

添加到购物车

Be wary of the outer plastic ring located on top of the rear camera's flash assembly. It can be easily displaced if not removed during disassembly.
You can use tweezers, a plastic opening tool, or a spudger to remove the outer plastic ring.

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步骤 15

Remove the following four screws securing the cable cover to the logic board:
One 2.7 mm Phillips screw
One 2.6 mm Phillips screw
One 1.3 mm Phillips screw
One 1.2 mm Phillips screw

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步骤 16

Use the edge of a plastic opening tool to pry the cable cover tabs out of their slots cut into the EMI shield on the logic board.
Lift the cable cover from its edge nearest the top and remove it from the iPhone.

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步骤 17

Use the edge of a plastic opening tool to pry the rear camera connector up from its socket on the logic board.
Be careful not to break any components off the surrounding area on the logic board as you pry upwards.
Remove the rear camera from the iPhone.
There is a small rubber gasket that sits underneath the rear-facing camera. Make sure that it is properly seated before reassembly.

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步骤 18 SIM Card

iPhone 4S Upper Antenna Replacement, SIM Card: 步骤 18 中的图像 1，2

iPhone 4S Upper Antenna Replacement, SIM Card: 步骤 18 中的图像 2，2

Use a SIM eject tool or a paperclip to eject the SIM and its tray.
This may require a significant amount of force.
Remove the SIM and its tray.

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步骤 19 Logic Board

iPhone 4S Upper Antenna Replacement, Logic Board: 步骤 19 中的图像 1，2

iPhone 4S Upper Antenna Replacement, Logic Board: 步骤 19 中的图像 2，2

Remove the five cables near the top of the logic board in the following order:
Headphone jack/volume button cable
Front facing camera cable
Digitizer cable
Display data cable
Power button cable (located underneath the headphone jack/volume button cable as shown in the second picture.)
To disconnect the cables, use the edge of a plastic opening tool to gently lift their connectors up and out of the sockets on the logic board.
Be careful not to break any of the small and delicate surface mount components as you disconnect the cables.

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步骤 20

Remove the 1.5 mm Phillips screw securing the grounding clip to the logic board near the headphone jack.

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步骤 21

Use the tip of a spudger to pry the small grounding clip up off the logic board.
Carefully grasp the grounding clip and remove it from the iPhone.
Before reassembly, be sure to clean all metal-to-metal contact points on the grounding clip (not the mating halves of connectors) with a de-greaser such as windex or isopropyl alcohol. The oils on your fingers have the potential to cause grounding issues.

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步骤 22

在这个步骤中使用的工具：

Standoff Screwdriver for iPhones

$5.49

添加到购物车

Remove the 4.8 mm standoff screw near the headphone jack.
Standoff screws are best removed using a standoff screwdriver or bit.
In a pinch, a small flathead screwdriver will do the job—but use extra caution to ensure it doesn't slip and damage surrounding components.

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步骤 23

Use the edge of a plastic opening tool to disconnect the Wi-Fi antenna from the logic board.

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步骤 24

If present, peel the piece of black tape covering the hidden screw near the power button.
Remove the 2.6 mm Phillips screw securing the logic board near the power button.
(Use caution when removing this screw and removing the power contact held by it; the contact tab will come loose with the screw)
Notice the small rubber bumper under the screen & digitizer cables (which are detached at top above the Q-code). This bumper can fall off of the logic board when removed or get stuck to the cables and fall off later.

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步骤 25

Remove the following screws securing the logic board to the case:
One 2.5 mm Phillips screw near the vibrator motor
One 2.4 mm Phillips screw
One 3.6 mm standoff along the side of the logic board nearest the battery opening.
Use a standoff driver bit and driver handle to remove the single 3.6 mm standoff screw.
In a pinch, a small flathead screwdriver will do the job—but use extra caution to ensure it doesn't slip and damage surrounding components.

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步骤 26

Carefully lift the logic board from the end closest to the speaker enclosure and slide it away from the top edge of the iPhone.
Remove the logic board.
Before reassembly, be sure to clean all metal-to-metal contact points on the logic board (not the mating halves of connectors) with a de-greaser such as windex or isopropyl alcohol. The oils on your fingers have the potential to cause grounding issues.
There is a small rubber bumper that sits on the top edge of the logic board where the digitizer and screen cables come through the case. It protects the cables as they bend over the top of the logic board. This can either get stuck to the cables or fall off the logic board when it comes out. Look back over step 22 for more details.

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步骤 27

Be sure not to lose the small grounding finger for the rear facing camera near the power button. This finger rests on top of the PCB, screwed down, and covered with the adhesive black plastic tape.

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步骤 28 Upper Antenna

iPhone 4S Upper Antenna Replacement, Upper Antenna: 步骤 28 中的图像 1，1

Remove the 2.4 mm Phillips screw next to the headphone jack.

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步骤 29

在这个步骤中使用的工具：

Tweezers

$4.99

添加到购物车

Use the edge of a plastic opening tool to peel the upper antenna off the headphone jack.
Use a pair of tweezers to remove the upper antenna from the iPhone.
Before reassembly, be sure to clean the metal-to-metal contact point on the upper antenna (not the mating halves of its connector) with a de-greaser such as windex or isopropyl alcohol. The oils on your fingers have the potential to cause wireless interference issues.

翻译

结论

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

88等其他人完成本指南。

作者

与8其他贡献者

14条评论

the upper antenna is the wifi antena?? or the thing by the speakers is the wifi antenna? i am a bit confused!

Jigar - 2012年4月20日回复

where can u buy this piece, Ive been searching for about an hour now, a friend of mine tried to fix their phone and ripped this piece off... no idea how... any help?

willsrepairs - 2012年6月30日回复

The guide is very good and I succeeded in opening the iphone and fixing back again all the parts. Unfortunately, the wi-fi module still doesn't work, I don't know why. Anyway, many thanks to all ifixit staff, since they are helpful, efficient and kind. Alberto from Italy

abragaglia62 - 2013年4月5日回复

Just completed replacing the battery and the wifi antenna. Went swimmingly. Thanks for the great directions. You guys rock! This fixed my 4s wifi grayed out issue. One thing to note, they wifi antenna needs to click into the socket to get a good connection. Put it together without checking this the first time and, no go.... Opened it up and made sure the connection was good and wahlah... AWSOME!

kempilt - 2013年8月3日回复

Hello, I had the issue with the grayed out wifi button. I replaced the upper antenna and the cellular antenna. When I turned on the phone the wifi was still greyed out. Does anyone has any other suggestions how I could possibly fix it.

Thanks

marcodegaetano - 2014年4月17日回复

iPhone 4S Upper Antenna Replacement

简介

你所需要的

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