iPhone 4 Teardown

Teardown

Teardown

Teardowns provide a look inside a device and should not be used as disassembly instructions.

We stripped the iPhone 4 down to its basic components. Apple definitely spent time giving the phone a thorough makeover, meticulously changing every little facet. We are happy to splay the fruits of their labor for your enjoyment!

We have confirmed that the iPhone's A4 processor has 512 MB RAM, unlike the iPad's more limited 256 MB. This decision may have been made fairly late in Apple's development cycle, because early leaked prototype phones only had 256 MB.

Can't get enough? Follow @ifixit on Twitter.

You can also take a look at the the YouTube video slideshow of the teardown!

For more detailed technical information on the silicon inside the iPhone, be sure to check out Chipworks' in-depth analysis of the iPhone 4's components.

Tools
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Edit Step 1 iPhone 4 Teardown  ¶ 

  • The world's most wanted device is now in the hands of the world's most foremost tinkerers!

  • The all-new iPhone 4 features upgrades from the 3GS including:

    • A redesigned glass & stainless steel body that shaves 3.5 mm off the width and is 3 mm thinner than the 3GS.

    • Choice of black or white coloring

    • Retina display featuring four times the pixel density of the 3GS

    • iOS 4 for multi-tasking

    • 5 MP, 720p capturing rear-facing and VGA front-facing cameras

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Edit Step 2  ¶ 

  • The iPhone 4's design is a dramatic departure from the aluminum and plastic drenched days that have plagued the iPhone in the past.

  • The rugged stainless steel bezels around the iPhone 4's perimeter double as both structural supports and antennas to boost reception.

    • Only time will tell if they absorb shock as poorly as the iPhone 3GS.

  • Shameless plug:

    • Never been to iFixit before? We are a repair manual for every thing. Our goal is to show everyone how to fix all their own stuff!

    • We also sell useful things, like Mac parts, iPad parts, and tools.

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Edit Step 3  ¶ 

  • An iPhone first: Interestingly enough, the storage capacity is not etched on the outer case of the iPhone 4.

  • We'd expect our 32 GB iPhone 4 to fulfill its promise and give us, well, 32 GB. Unfortunately it has an actual capacity of 29.06 GB.

    • Given the fact that 301 MB of "other" data is being stored in memory, this leaves the user with 28.77 GB of free space.

  • In terms of OS, the iPhone 4 comes preinstalled with the newly released iOS 4, build 8A293.

  • The iPhone 4 is Model A1332. Interestingly, that's a lower number than the A1337 iPad 3G.

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Edit Step 4  ¶ 

  • Like the iPhone 3G and 3GS, there are two silver Phillips #00 screws at the bottom of the phone. Note: newer iPhone 4 handsets use 5-point "pentalobe" screws instead, requiring the use of a special screwdriver.

  • In a departure from the design of the 3G and 3GS, removing the screws releases the rear case, not the front glass.

  • This design makes switching out the rear panel trivial, but unfortunately means that replacing the iPhone 4 front panel will likely be rather challenging.

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Edit Step 5  ¶ 

  • Removing rear panel gives us a pretty good look at the iPhone 4's innards.

  • Holy battery! The inside of this thing is dominated by its juice-provider.

  • It's pretty apparent that real estate was very limited inside the iPhone 4's 115.2 x 58.6 x 9.3 mm footprint.

  • You can also see pressure contact on the inner face of the rear panel for what appears to be an antenna.

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Edit Step 6  ¶ 

  • Luckily, the battery can be easily removed once the back panel assembly is out of the way.

  • The 3.7V 1420 mAh Li-Polymer battery allows for up to 7 hours of talk time on 3G or up to 14 hours on 2G.

  • The battery connector is different than the one in the 3G and 3GS. Fortunately, the battery is not soldered to the logic board. This will make battery replacement on the iPhone 4 fairly easy to accomplish.

  • The plastic pull tab for the battery says "Authorized Service Provider Only."

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Edit Step 7  ¶ 

  • No EMI shield will stand between us and the innards of this iPhone 4!

  • The EMI shield comes off after five screws are removed to reveal lots of important connectors.

  • Upon further inspection, it looks like the EMI shield actually acts as the Wi-Fi antenna. The long screw at the top and center grounds the antenna.

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Edit Step 8  ¶ 

  • The logic board is heavily embedded under wires and EMI shields.

  • While we're not too busy, let's talk RAM. Unlike the iPhone 3GS and iPad, which are both equipped with 256 MB, the iPhone 4 has a whopping 512 MB!

  • The increase in RAM allows for a larger amount of cached data allowing for a smoother and faster user experience.

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Edit Step 9  ¶ 

  • Hiding in the corner is the iPhone 4's vibrator motor, which...well...vibrates.

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Edit Step 10  ¶ 

  • Removing one of the many connectors on the logic board.

  • In our brief usage, we did notice that the phone is considerably warmer on the right side. This makes sense, as the logic board is located entirely along the right side of the phone.

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Edit Step 11  ¶ 

  • Behold a beauty in the iPhone 4: a rear-facing 5 MP camera with 720p video at 30 FPS, tap to focus feature, and LED flash.

  • This is a huge upgrade from the 3.2 MP camera found in the iPhone 3GS.

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Edit Step 12  ¶ 

  • Removing the lower antenna/speaker enclosure from the bottom of the phone.

  • The improved audio chamber aids in clarifying sounds leaving the iPhone, including calls via speakerphone as well as music played through the speaker inside this housing.

  • Apple hasn't made taking the iPhone 4 apart very hard so far: no 5-point Torx bits or fragile clips to be seen.

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Edit Step 13  ¶ 

  • Removing the logic board.

  • The unusual shape and small size of the logic board shows just how costly real estate is inside this powerhouse of a phone.

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Edit Step 14  ¶ 

  • Apple has integrated the UMTS, GSM, GPS, Wi-Fi, and Bluetooth antennas into the stainless steel inner frame.

  • The dual purpose stainless steel inner frame/antenna assembly addresses possibly the two biggest flaws concerning previous iterations of the iPhone: continuous dropped calls and lack of reception.

  • Apple has gone a step further and tuned the phone to utilize whichever network band is less congested or has the least interference for the best signal quality, regardless of the actual signal strength. Early reports suggest this feature, while buggy in its early stages, will greatly improve the phone's reliability on AT&T's fragile network.

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Edit Step 15  ¶ 

  • With the EMI shields off, we can get a look at what makes this beast roar.

  • Lurking deep within the phone, the A4 processor, manufactured by Samsung, is the centralized unit that provides the iPhone 4 with the much needed computing power.

  • Replacing the Samsung S5PC100 ARM A8 600 MHz CPU used in the 3GS, the new iPhone uses the ARM Cortex A8 core, much like its bigger sibling, the iPad. The iPad's A4 is clocked at 1 Ghz.

  • The new Samsung Wave S8500 smartphone uses the same Cortex A8 core!

  • Just to the left of the A4 package, the AGD1 is the new 3 axis gyroscope that we believe is designed and manufactured by ST Micro for Apple. The package marks on this device do not appear to be the currently available commercial part, L3G4200D. The commercial version of this gyroscope is yet to be released — Apple got first dibs on it.

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Edit Step 16  ¶ 

  • On the top of logic board:

    • Skyworks SKY77542 Tx–Rx iPAC™ FEM for Dual-Band GSM/GPRS: 880–915 MHz and 1710–1785 MHz bands.

    • Skyworks SKY77541 GSM/GRPS Front End Module

    • STMicro STM33DH 3-axis accelerometer

    • TriQuint TQM676091

    • 338S0626

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Edit Step 17  ¶ 

  • On the back:

    • Samsung K9PFG08 flash memory

    • Cirrus Logic 338S0589 audio codec (Apple branded). This is the same part as in the iPad.

    • AKM8975 - newest magnetic sensor that promises to improve the performance over the prior generation.

    • Texas Instruments 343S0499 Touch Screen Controller

    • 36MY1EE NOR and mobile DDR

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Edit Step 18  ¶ 

  • Wi-Fi, Bluetooth, and GPS are all provided by Broadcom and located beneath EMI shields on the front side of the board.

  • Broadcom BCM4329FKUBG 802.11n with Bluetooth 2.1 + EDR and FM receiver.

  • Broadcom BCM4750IUB8 single-chip GPS receiver.

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Edit Step 19  ¶ 

  • Up next we find the second microphone, which is used to cut out ambient noise and improve sound quality when talking on the phone.

  • You can also see the ambient light sensor and the proximity sensor which are mounted right above the earpiece.

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Edit Step 20  ¶ 

  • The front-facing VGA camera.

  • While the 5 megapixel camera on the rear of the iPhone 4 is ideal for video recording, the smaller camera on the front optimizes use of Apple's FaceTime for mobile-to-mobile video calls.

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Edit Step 21  ¶ 

  • The front panel comes off without too much additional trouble.

  • The stainless steel body left behind is quite a marvel of gadget engineering.

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Edit Step 22  ¶ 

  • The front glass panel of the iPhone is reported to be constructed of Corning Gorilla Glass, a chemically strengthened alkali-aluminosilicate thin sheet glass that is reported to be 20 times stiffer and 30 times harder than plastic.

  • Gorilla Glass holds many advantages as the iPhone 4's front panel, including its high resistance to wear and increased strength from an ion-exchange chemical strengthening process.

  • LED Backlight for the LCD.

  • Unfortunately, the LCD panel is very securely glued to the glass and digitizer, with the entire assembly measuring 3.05mm thick. It appears that if you break the glass, you'll have to replace the iPhone 4's glass, digitizer, and LCD as a single assembly.

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Edit Step 23  ¶ 

  • Surprisingly, the electronic home button switch is attached directly to the home button itself.

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Edit Step 24  ¶ 

  • The 30-pin dock connector is where we would usually expect it to be: at the bottom of the iPhone.

  • The primary microphone is also found at the bottom of the phone.

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Edit Step 25  ¶ 

  • Apple is following in the footsteps of the Nexus One by using dual microphones to help improve audio quality and suppress background noise.

  • Interestingly, the two microphones are positioned at the two far ends of the phone. The microphone at the top of the iPhone is most likely utilized for capturing background noise to be analyzed by internal circuitry and used to cancel any noise put into the main microphone other than the user's voice.

  • You can also see the ambient light sensor which adjusts the iPhone's brightness as lighting conditions change.

  • The proximity sensor sits right next to the ambient light sensor. This will turn the display off when you bring the phone up to your ear thus preventing any touch interaction while it's pressed up against ear.

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Edit Step 26  ¶ 

  • As always, we provide each device with a fitting final layout shot that it so greatly deserves.

  • We would like to thank you for joining us tonight during this monumental endeavor.

  • We also created a set of iPhone 4 repair guides for all major components inside the device. They will definitely help you fix your iPhone 4 should something happen to it!

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Edit Step 27  ¶ 

  • iPhone 4 Repairability Score: 6 out of 10 (10 is easiest to repair)

    • The iPhone 4 is held together primarily with [lots of] screws, sans tabs, and limited adhesive.

    • The rear panel and battery are both easy to remove and replace (provided you have the right kit and/or correct screwdriver).

    • Apple is using Pentalobe screws to secure the rear panel and keep people out.

    • The LCD and glass are fused together, making repairing a cracked front panel more costly.

    • During disassembly, your finger oils interfere with the iPhone 4's RF grounding contact points, so we recommend you wear gloves while performing any repairs.

Required Tools

Phillips #00 Screwdriver

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Plastic Opening Tools

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Portable Anti-Static Mat

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Comments Comments are onturn off

Obviously creating antennas out of the frame pieces didn't work well for them... how obvious it should be that you should not touch an antenna and expect the radio to work. The "dual-band" enhancement is worthless - cellular got kicked off the 800-900 MHz spectrum.

PC Evil Genius, · Reply

What happens if you strip a screw.. How do you go about getting it out?

Casey, · Reply

nice!!!!!!!!!

rsss, · Reply

We do these operations without finger cots and ESD chain. There is risk to damage the components.

maker wu, · Reply

EXTREAMLLY bad teardown guide. If It hadn't been for the fact that I have taken one apart before I would have killed the phone. No ref on screw sizes, no explanation on where force should be applied.............. REALLY BAD!!!!!!!!!

zexxxiongaia, · Reply

We are glad to hear that you are looking to our site for guidance. However, we would like to make sure you know that the Teardown Flag at the top of all teardowns explains, "Teardowns provide a look inside a device and should not be used as disassembly instructions." We strongly urge users not to follow teardowns, as they are intended for information and entertainment. Luckily, we have this extremely comprehensive list of guides (as opposed to teardowns) right here.

Jake Devincenzi,

I was dung a dfu mode on my iphone 4 and ever sens wat ever i do it ends up in dfu

just boot , recovery fix , restore , ext. can you tel me watt is wrong ?

gabriel, · Reply

why have you left out each and every screw removal, to blab about the parts, not too detailed other than you like to bilge on about the features???

camxposure, · Reply

very good job, tanks

k1123, · Reply

I'd reposition each camera to be just above the respective camera holes. But awesome teardown guys! Thanks!

Cliff, · Reply

Come on guys - you know that 32GB, for hard drive marketing purposes, means 32 billion bytes, as opposed to 32 x 2^30, which is the technical definition of it.

Ryan, · Reply

Isn't the term "iOS" not "iPhone OS"

rab777hp, · Reply

32 MB as in 32*1000^3 - not 32*1024^3

snappygalbladder, · Reply

When Apple says 32GB, it means 32,000,000,000B.

1KB is actually 1024B, 1MB is 1,048,576B (1024x1024), and 1GB is 1,073,741,824B

So 32,000,000,000B is actually 29.80GB.

Many manufacturers do the same.

bertrandfourrier, · Reply

Most people think the iPhone 4 has 512mb of ram but if you jailbreak it you can find that after boot up from a complete power off, before the damens are loaded (those are unix based startup codes that start basic apps like the SpringBoard and the phone app) you have 615gm of installed ram but because of those damens you only have 512gb but there are some useless damens you don't need that you can delete to save ram. Also on my iPhone 4 (4.0.1 15gb) there is a 1gb parton for the iOS making the 15gb to a 14gb, I don't know why the 32gb is any different. Also 512gb of RAM is the right amount to run winowds 95, to bad apple used a unix base for the iPhone and their computers. ;(

tdogg daplaya, · Reply

That's interesting... Apple's own gallery at http://www.apple.com/iPhone/gallery/ illustrates tiny torx screws. Maybe they still had a few leftover 00 Philips? :)

Mike Hopkins, · Reply

Erm, not sure why that P in the URL got capitalised. It should be lowercase, else you'll get a 404. I'd edit my note, but I can't see how to... and I missed a second l in Phillips... whoops!

Mike Hopkins,

yeah, I also remember torxs' from Apple gallery...weird ;)

grze,

In Apple's gallery pictures, the phone has five-pointed Torx-like screws visible. Nice that they went with something a bit more standard on the production model.

Frank, · Reply

I hope the screen is more durable during a drop (unlike everyone who says the previous iPhones bevels save the screen during a fall) or else the screen will be even more of a pain to fix.

Matthew McQuinn, · Reply

Hey body! You're great as always!

One thing which is nothing to do with what you're doing, but I can't pass by without making a remark: Thanks for the care you've given to your fingernails:) I hate people with dirty fingernails! Keep up the good work.

MimarSinan, · Reply

We take pride in the quality of our hands!

Andrew Guenther,

The one that I bought in Japan had some weird 5-pointed screws instead of Phillips ones. That's annoying. They're not quite Torx and not quite Phillips.

Drew Hamilton, · Reply

As of September the iPhone 4 come installed with 2 5 point security torx screws.

leftyedwards, · Reply

Star-shaped torx + screw driver tool tools for iphone 4

http://cgi.ebay.com/Star-shaped-torx-scr...

leftyedwards, · Reply

Could it really be? Just a little bit of user-serviceability?

Chris Green, · Reply

Interesting that the back panel and battery are so easily removed. I'd love to see a third party make some back panels for something like conductive charging similar to the palm pre, or make a smaller sized battery to add some space in there to stuff some interesting little hacks. Maybe like a car remote or RFID stuff.

Francis Real, · Reply

Is this really an antenna on the backside?

stonesapple, · Reply

whats the contact and coating on the right side of the back (above the logic center) for?

Brennan Sheremeto, · Reply

Since it is in the shape of the logic board it looks like it may be an EMI shield, but it may also be an antenna (we're not 100% sure on what it is).

Andrew Bookholt,

If it is shielding, then the conductive spot is connected to ground (battery, or case). If it is an antenna, then it is connected to an inductors pin.

Some Chinese-sourced backplates completely ignore this design detail and no one has complained about diminished functionality. However, if the shield is not on place, the FCC might say something for radiation pollution.

Roberto Guerra,

There's a tiny blue thingemabob on the bottom rim of the backcover, is this a warrenty seal?

deetex, · Reply

on the first picture of step 6. On the right hand, there is a piece : where it come from ? Where is it's place ?

thanks yous for your answer

jpoincheval, · Reply

It is a pressure contact that touches the rear panel, and its correct position can be seen in the third picture on this step.

Andrew Bookholt,

The battery is glued into place and needs to be pried away, which will often deform the battery. So long as you do not puncture the casing, it should be ok to flatten it back into shape and reinsert it into the system. If you puncture the casing, you should get a new battery or risk excessive heat and possibly a risk of explosion.

How did you manage to get the battery out so cleanly?

Fred Jackson, · Reply

battery is secured with a strong adhesive. simply pulling on the pull tab may result in tearing the tab off. you may need to pry it loose instead.

Matthew Sands, · Reply

What is the small piece in your hand in the first picture? I do not see that piece in my phone or in any of the pevious pictures.

Matthew Sands, · Reply

Sorry to ruin the magic, but that "EMI shield" is actually the Wi-Fi antenna. The phone antenna is in the speaker enclosure removed in Step 12. The steel frame acts as a ground plane, not actually as a radiating antenna.

dfskjfksa, · Reply

If thats the antenna no wonder they have problems!! (It's not)

stonesapple,

I see five screw holes in the shield.....

gsgmac, · Reply

Now that the 32GB iPhone 4 is confirmed to have a 512MB RAM,

will the 16GB iPhone 4 have the same amount of RAM?

or less?

VPster, · Reply

of course the same

grze,

Is there an app that can tell how much memory a phone has?

VPster,

Never mind, I figured it out. The app is called Checkup.

VPster,

small screw on left, big on right (connector on bottom)

Joe Smith, · Reply

thats not an accelerometer, thats the motor and weight for vibration, accelerometers are microchips and have no moving parts

Walker Quine, · Reply

That's not a Gyroscope it is the Vibrator

Jeremie, · Reply

That looks like the vibrator, not a gyro.

cigumo, · Reply

This vibrator is made by MIM (Metal Injection Molding)technology.

It's said that the metal frame of iPhone is also made by this technology, hence its strenghth is 5 times than normal steel.

Frank W, · Reply

Long screw left side, short screw right side

Joe Smith, · Reply

I have to take my Iphone appart because this little fella here don't work until I smack the phone against my palm. Maybe the connecting points don't all touch... Thanks for this!

Ivanoinks, · Reply

Repairing an iPhone 4, but I don't have that screw as displayed in the photo. As a matter of fact the inside doesn't look the same. Also, the phone I am repairing does not have the SIM card on the side either. Am I missing something? I double checked. This is an iPhone 4...

Manny, · Reply

You have a CDMA iPhone 4 which does not have a SIM card. Use this teardown instead: http://www.ifixit.com/Teardown/iPhone-4-...

Scott Head,

Looks like it's not a Philips Lumileds Luxeon LED like the rumor were stating after all. It's still yellow and this article says it should not be yellow: http://www.ledsmagazine.com/news/5/10/38

That's really too bad.

Nikolas Kong, · Reply

Doesn't 720p mean 1280x720@60FPS?

nuts32605, · Reply

Apple doesn't seem to think so.

"Video recording, HD (720p) up to 30 frames per second with audio"

Andrew Bookholt,

Is the iPhone's 4 Camera able to replace the iPhone 3Gs Camera? eg is it the same size etc...

Kristyanna, · Reply

Actually, the iPhone 3GS had a 3 megapixel camera. It says so on apple's website: http://www.apple.com/iphone/iphone-3gs/

Flaming Llama, · Reply

I say apple should stop trying to mack the Ipod so thin and put a 5MP or higher camra inside the Ipod touch 5g and put a better sounding speaker in it to I also say they should mack the screen a 4.5 inch display

brad, · Reply

you forgot to mention the 1 screw that are located under the white tab, that needs to be removed before removing the logic board

Robert Munroe, · Reply

Remove your simcard tray before removing the logic board. Also if you follow this guide, two screws hold down the motherboard one is a standoff screw the other a regular screw in the middle of the logic board.

Sam, · Reply

hi where can i find the logic board for iphone 4 gsm

hebert raymond, · Reply

rally i enjoy fixing iphones .

bee, · Reply

In 3GPP cellular networks, the decision to move from one frequency to another is up to the network to decide. The terminal can only say "I would like to go to this frequency or neighboring cell". Further it is not likely that the phone is measuring congestion of the network. Once again that is a parameter that the network should be monitoring and should be moving the terminals around (also called a handover) from cell to cell and frequency to frequency.

In reality, the AT&T network gear vendors have probably improved their handling of congestion.

WirelessGuy, · Reply

As every high frequency engineer knows, touching an open antenna will detune it considerably. Was surprised to read about the open antenna design and subsequently the first reception problems with the design are reported.

Arthur Elsenaar, · Reply

yeah. NOT! Fail

smorgasbroed, · Reply

This is new version of Apple A4 processor, with PN 339S0108 (original A4 was 339S0084) and 512MB Mobile DRAM from Samsung (2xK4X4G643GB)

Dimitar, · Reply

The L3G4200D seems to be available indeed: http://www.st.com/stonline/products/fami...

Antoine Beyeler, · Reply

So what's the deal with the Triquint CDMA chips?

NaN, · Reply

I'm sorry, but what exactly are CDMA PA chips doing inside the iPhone?

Patrick Ferree, · Reply

Upon doing some research it seems the info listed in Step 16 is taken directly from a Sprint EVO 4G teardown from ChipWorks, for whatever reason. It's not the same list as on the iFixit teardown of the Sprint EVO 4G.

Also, the Triquint chip shown in the image is not the same number as shown in the associated text column. They do note this is a work in progress so we should give them some leeway, though posting erroneous info is pushing it, even if it is just a placeholder.

NaN,

Would be Godsent. But definitely a mistake.

anonymoususer1,

That CDMA information was incorrectly copied from a different report. My apologies; it has been removed.

Kyle Wiens,

You have CDMA parts listed in step 16. Was in 17 earlier, now in 16. I am seeing...

Step 16

Triquint TQM613029 CDMA PA-Duplexer Module.

Avago FEM7758 Front End Module

Triquint TQM13029 CDMA PA

Atmel M88PA MCU with eFlash

Silicon Image P1U0941 HDMI Processor

Samsung KBY00U00VM NAND Flash

Surely that is INCORRECT?

anonymoususer1, · Reply

Based on examination of the photos, yes, it sure seems like that list is incorrect. One of the TriQuint chips sure looks like TQM676091, which doesn't seem to exist, but TQM676021 does exist and is an HSUPA chip.

KlevenBingham,

That information was incorrectly copied from a different report. My apologies; it has been removed.

Kyle Wiens,

different photo? Where is the A4 Logo?

Michiel de Jong, · Reply

Nevermind, just the lighting.....FAIL

Michiel de Jong,

The 338S0626 appears to be an Infineon cellular baseband chip.

Mathew Martineau, · Reply

I see a 452 not a 542 on the skyworks chip. There is another skyworks chip I can't make out the number for. Can you guys clarify?

Matt Gattis, · Reply

Please? This is wrong information.

Matt Gattis,

Re: AKM8975. The PN is actually AK8975/B - 3-axis Electronic Compass, Si-monolithic 3-axis geomagnetic sensor LSI

Dimitar, · Reply

What about 338S0867 part?

Power Management IC?

Alexandr, · Reply

From Broadcom's site it says that the "Broadcom BCM4329FKUBG" is an FM TX and RX and not only RX.

Dimitris, · Reply

From looking at the Broadcom site about that part it appears to be a utility chip that they rolled out to replace older parts (probably the ones in previous iPhones etc) The chip supports both 2.4 and 5ghz for full wifi a/b/g/n and includes the FM transmit and receive. Steve Jobs said in the Keynote that iPhone 4 supports wifi n at 2.4ghz only so FM Transmit won't be the only thing available on chip not in use.

However the main feature Apple probably looked at was the improved battery life and reduced 65nm process. The chip appears to serve Apple's engineering conditions and be not utilising some features they can reduce the draw on the power.

I don't think we will see FM Tx from this new device as I don't think we will see 5ghz wifi n (or wifi a). If they had an application of the tech ready to go Steve would have shown it off, as they didn't show it I don't think it will be activated later. However if they find a "compelling" reason to activate it we should see appearances in the next year and the hardware *could* support it.

Regards

Alexander

Alexander Neilson,

That means that probably we will see FM radio even in RX mode only? I wish that could be done with a software update and then the phone would be feature complete for me.

Thanks for the answer too. Answered a lot of my questions.

Regards

Dimitris

Dimitris,

Why are you guys so destructive in removing emi shields?

egrau, · Reply

The EMI shields were soldered onto the logic board. Those are extremely difficult to take off without making a mess.

Miroslav Djuric,

Can the GPS chip be removed and the phone still be functional?

Bill Johnson, · Reply

That oval copper thing in the center looks like a low-frequency inductor-type antenna. It has two spring leads that contact the back of the circuit board. Could this be used for near field communications/RFID?

morcheeba, · Reply

oh wait, no way... that looks like a real speaker :-) false alarm!

morcheeba,

I don't know why my comment disappeared, anyway, can you tell anything about that glass, is it the same that was used on 3g(s) or better?

grze, · Reply

Front glass is Gorilla, but what about the back? I can't imagine it would be different, but I didn't see it mentioned.

John Whitworth, · Reply

Is it not possible to separate the digitizer from the LCD from the backlight from the glass?

Ankit, · Reply

there might just be a way to fix the glass only

Nick, · Reply

How do you know that it is Gorilla Glass if Corning does not publicly release which devices are equipped with their glass? Additionally, the product information for the iPhone 4 calls it aluminosilicate glass, but it does not say that it is alkali-aluminosilicate. As you know, there are many applications of aluminosilicate glass other than alkali, including boron-aluminosilicate glass.

soopermodel12, · Reply

The bonded display/digitizer will prevent dust from becoming visible underneath the glass--a problem that plagues middle models of the iPhone (the original iPhone had a bonded display and no dust!)

Randy, · Reply

I'm hoping that the LCD being bonded to the glass will prevent dust from entering the display. All I know is that my original iPhone display is still beautiful and dust free, but my 3GS had dust between the glass and LCD within I week.

Russell Boyer, · Reply

Hmm. I came here to try to figure out what the mysterious extra window is which appears in photos of the white iPhone 4, above the "receiver" ear slot. I think it's for a light sensor, and I assumed that it was also there on the black model, but just not visible because of the black surround.

http://www.engadget.com/2010/06/23/apple...

I think I can see it on my phone by using an LED flashlight to provide lots of illumination, but I'm not sure, and it doesn't seem to be there from the back in these photos.

Any ideas?

Rick DeNatale, · Reply

I believe I read that it is a contact sensor of sorts that detects when the phone is held up to your head (to turn off the display and prevent false presses on the touch screen).

cityzen,

"Surprisingly, the electronic home button switch is attached directly to the home button itself."

That would make it, the home button, very easy to replace in the event of failure; rather than having to change something on the logic board.

ahothabeth, · Reply

Let's hope the home button won't wear of due to excessive use of fast app switching.

Omer Aloni, · Reply

Response to lint blocking the old switch?

kolleykibber, · Reply

Why does the Homebutton have 4pin conection? Its only One switch.

And what are this smd Parts 6 resistores? And two diodes? Can you Plz make a shematic of this Parts and the values of the smd Parts thx

3gfisch, · Reply

The distance between the microphones enhances noise cancellation.

Brian Epstein, · Reply

thank you for showing us the step of repairing the beauty of apple. after following it, i feel starting to hate the iphone. sorry! coz don't have his own personality.

haajaa, · Reply

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