Having speaker or cellular reception issues on your GSM/AT&T
iPhone 4 and want to DIY repair it? iMore has
you covered. We can guide you through the process and give you advice on where
to get your parts and tools. Replacing the bottom speaker assembly or cellular
antenna are both pretty straight forward repairs if you’ve got good
instructions, the right tools, and quality parts.
Disclaimer: As with any repair, iMore nor PXLFIX can be held responsible for any damage
you may do to your device. It’s also worth considering that opening up your
device to perform any repair or modification can and will void your Apple
warranty. If you don’t feel comfortable opening your device, don’t. Use extreme
care and caution when performing a repair on
any device.
What issues this repair will address
- Cellular reception issues – if your iPhone 4 can’t hold a cellular signal,
won’t connect to 3G, or constantly says “Searching..” – you may need to replace
your antenna. First try replacing your SIM or speaking with your carrier.
- Bottom speaker doesn’t work when using speakerphone or playing
music
What you need for a DIY speaker or cellular antenna repair
PXLFIX recommends using only quality and genuine parts from a reputable
supplier like eTech Parts. They have
quality parts, tools, and much more for all your repair needs.
Please note the speaker assembly is the same across all models of iPhone 4
and iPhone 4S but the antenna will
be different.
- GSM iPhone 4 (please note there ARE internal differences between the GSM and
CDMA models)
- New GSM iPhone 4 speaker assembly or cellular antenna (whichever part you
are replacing)
- SIM removal tool (or a paper clip)
- #00 Phillips screwdriver
- Pry tool or spudger
- Security screwdriver (only if your iPhone has 5-point security screws in the
dock connector)
Power off your iPhone 4
Before performing any repair, always power off your device before removing
any screws or parts.
Remove the back

- First remove the bottom 2 dock connector screws in your iPhone 4. Use either
your #00 screwdriver or the five point depending on whether or not your iPhone 4
has security screws in the dock connector. Almost all newer devices will have
security screws.

- To remove the back simply slide the back upwards and lift it off
gently.
- Set the back and 2 dock connector screws aside.
Remove your SIM card
Use a SIM removal tool or a paperclip to remove your SIM card and tray. Set
them aside.
Remove the battery

- To remove the battery you’ll need to remove the #00 screw holding the
battery clip in place. Remove this screw located to the bottom left of the
battery.

- The metal clip on the battery is what clips the battery to the logic board.
You’ll need to pop this clip up with your plastic pry tool. Simply stick the end
of your pry tool underneath the clip and gently pull upwards until it unfastens
from the logic board.

- To remove the battery, I do not recommend using the plastic pull tab. There
is quite a bit of adhesive underneath the battery and the tab will normally just
rip off or you can bend the battery. Instead, run your pry tool along the right
side of the battery and break the adhesive that way. Once the battery is free
from the adhesive, you can pull the battery out of the phone. There are no other
connectors holding it in.

- You will notice a tiny grounding clip sitting underneath where you unscrewed
the battery. Set this aside for replacement during reassembly. This is a
grounding clip for your antenna. Make sure you put it back in place before
reconnecting your battery.
Remove the dock connector shield and disconnect the cable

- There is a shield held on with two screws covering the dock connector cable.
Remove the two screws holding it in place and set the shield and screws aside,
remembering where they came from.

- Next, use your pry tool to pry up the actual dock connector cable. Be
careful as there is adhesive holding the cable in place as well. Peel back the
adhesive gently to free the cable.
Remove the top logic board shield

- There are 5 screws holding the logic board shield in place. Remove the 5
screws holding it in place. Just be sure to remember which holes they came out
of as the screws are different sizes. I always keep them in order of how they
came out.

- Next you’ll need to remove the shield. There is a tiny clip built into the
shield holding it in place. (Refer to the photo above.) Pop it up with your pry
tool and you should be able to slide the shield up fairly easily. Just take care
not to bend it or break off a clip.
Disconnect the 6 cables from the top of the logic board

- There is only one connector holding the camera to the logic board. Remove
this cable in the picture above using your pry tool. Gently lift upwards and it
will pop right off.

- Next gently lift the camera out of the device. You’ll notice there is a tiny
tab that is seated underneath the LCD and digitizer cables to the right.

- Next pop up the LCD and digitizer cables to the right of where the camera
cable was connected. You pop them up in the same direction.

- The 3 cables further to the right will need to be disconnected as well. They
pop up in the opposite direction.
Remove the logic board

- Start with the 2 screws holding the logic board down in the middle and at
the bottom left. Both use your #00 Phillips screwdriver. They are the same size.
The one on the right of the logic board in the middle of the device has a water
sensor over it you’ll need to remove.
- The second screw is located where the logic board meets the speaker assembly
towards the bottom left of the device.

- The third and final screw holding the logic board in is located at the top
of the logic board off to the right. It is the only cross-head screw in your
device. Use a small flathead screwdriver to carefully remove it.

- You should now be able to remove your logic board. Holding it at the bottom,
gently pull it upwards. I use my other hand to lift up at the top where the rear
facing camera used to be.
- Take note that there is a small rubber piece that sits at the top of the
logic board. You will need this for re-assembly so make sure it doesn’t fall
off. If you lose this, you could see reception issues.
Remove the speaker assembly

- To remove the speaker assembly you have one more #00 screw to remove. It
sits to the right of the speaker assembly in the bottom right hand corner of
your device. Remove it.
- The second screw holding the speaker assembly into your iPhone you’ve
already removed when you removed the logic board.
- Gently lift the speaker assembly out of your device and set it
aside.
Replace the speaker assembly

If you’re replacing the speaker assembly, you’ll just need to unscrew the
cellular antenna and peel back the adhesive holding it in place. There are only
2 screws holding it in place. Place the cellular antenna carefully on the new
speaker assembly and follow the instruction video for reassembly below.
Replacing the cellular antenna

Remove the 2 screws holding the old assembly down and peel it off the speaker
assembly. From here you can apply the new cellular antenna to the speaker
assembly. Most will come with adhesive already on them and ready for
installation. Be sure to put any folds or creases where necessary as some come
flat and you’ll have to work it into place.
Reassemble your iPhone
Once you’ve gotten your new speaker assembly or cellular antenna reassembled
using the steps above, you’ll just need to reassemble your iPhone 4. We’ve put
together a reassembly video you can watch above.
And… done!