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iPhone 4 glass is shattered

Oh no! Your iPhone's glass did not survive your unintentional drop test!

Broken front panel

Take a deep breath and see if your iPhone will turn on and operate normally. In most cases, the iPhone is still functional but now a cosmetic disaster. Unfortunately, the iPhone 4's front glass and LCD are fused together and must be replaced as one piece.

The display assemblies differ between carriers, so a CDMA iPhone 4's display assembly is not compatible with a GSM iPhone 4, and vice versa. Luckily for you, we have parts and guides for both the GSM (AT&T) and CDMA (Verizon) iPhone 4's.

Broken rear panel

Apple did not grace the rear panel of the iPhone 4 with the same high-strength glass as the front, so fractures are much easier to come by on the backside. Even though the CDMA and GSM versions of the iPhone 4 have different parts, the procedure to replace the rear panel is the same for both models. GSM iPhone 4 owners may choose between either an OEM replacement panel or our transparent rear panel. A high quality OEM replacement rear panel is still available for CDMA iPhone 4's.

iPhone is frozen or unresponsive

Even after furious button mashing and screen smashing, your iPhone 4 doesn't respond.

Restart iPhone

Sometimes all it takes is a restart for the iPhone to become responsive again. To restart your iPhone when it is unresponsive, press and hold the sleep/wake and home buttons until the Apple logo appears (~10 seconds).

Very low battery

It is possible for an iPhone to become unresponsive if the battery drops to an extremely low level. Plug the iPhone into your computer or wall charger and allow it to charge for at least 20 minutes before using it again.

iPhone 4 will not charge

Plugging in your iPhone 4 does not bring it life.

Bad cable connection

Check the USB cable for damage and dirt, especially at the ends. Then try using the wall charger, as this will provide greater power input than the computer/USB.

Broken charger or USB cord

Try using different chargers to see if you may have a problem with your charger or cord.

Obstructed/bad dock connector

Inspect the 30-pin dock connector at the bottom of the iPhone for dirt, lint, and damaged pins. Clean out the dock connector very carefully with a tooth pick or soft toothbrush. If the dock connector is broken, you will have to replace it. Make sure you have the correct part, depending on if you have a GSM (AT&T) or CDMA (Verizon) iPhone 4.

iPhone will not turn on

You cannot get your beloved iPhone 4 to turn on.

Drained/dead battery

Plug your iPhone into your computer or wall adapter to charge. If it does not charge when connected to either of these, you probably have a dead battery. The battery will need to be replaced (GSM (AT&T) or CDMA (Verizon)).

Bad display

It is possible that it appears nothing is happening because the display is bad. If the iPhone sounds like it is working properly but nothing is visible, it is possible the display is bad and must be replaced (GSM (AT&T) or CDMA (Verizon)). If plugging your iPhone into a power source causes it to endlessly vibrate or sound the "connected to power" chime over and over while the display remains blank, you have a display problem that may require further troubleshooting.

Bad logic board

If nothing else works, your logic board is probably bad and needs to be replaced (GSM (AT&T) or CDMA (Verizon)).

"This accessory is not optimized for this iPhone" message

An error message appears as if you have connected an unsupported accessory to your iPhone

Obstructed/bad dock connector

Check the 30-pin dock connector at the bottom of the iPhone for dirt, lint, and damaged pins. Clean out the dock connector very carefully with a tooth pick or soft toothbrush. High concentration isopropyl alcohol (at least 90%) and a cotton swab should be used to clean any debris that does not come off with a tooth pick or soft toothbrush. If the dock connector is broken, you will have to replace it (GSM (AT&T) or CDMA (Verizon)).

Dirty or corroded logic board connections

After an iPhone has been submerged in a liquid, there may be some corrosion or debris on the logic board connections that cause this error message. Remove the logic board (GSM (AT&T) or CDMA (Verizon)) and clean all of the contacts with a soft cotton swab and high concentration isopropyl alcohol (at least 90%).

Weak or lost wireless connections

You have trouble connecting to a wireless network or your calls are suddenly dropped.


The iPhone 4 has a well-documented issue regarding its antenna case design that could cause someone to drop a call if they hold the iPhone in a certain way. This problem lies in the design of the phone's hardware, and can not be fixed with any software updates or new parts. There are two solutions to this problem; you may:

  • follow Apple's advice, and not hold the phone in such a way that alters the reception, or
  • put a cover on your iPhone.

Dirty antenna grounds

If your iPhone has been disassembled before, it's possible that finger oils were left on the grounding locations for the Wi-Fi or Bluetooth antennas. These oils will cause grounding issues for the antennas, which could lead to a weak signal or no connectivity at all. Be sure to clean all grounding points with an electronics cleaning solution before reassembling your iPhone to prevent grounding issues.

No audio or distorted audio through speakers or headphones

Your iPhone 4 turns on and appears to work, but when you plug in headphones or speakers, the audio doesn't play properly.

Bad headphones/speakers

It's unlikely your headphones or speakers are bad, but it's worthwhile to eliminate these as the source of your problem at the beginning. Try your iPhone with another set of headphones or speakers just to make sure that the problem is with the iPhone.

Bad audio jack

The most likely cause of audio output problems on iPhone 4 is a bad audio-out jack. If you have determined that the problem does not lie in your external speakers, you should replace the headphone jack (GSM (AT&T) or CDMA (Verizon)).

Restore iPhone 4

Your iPhone is behaving erratically or displays the text "Use iTunes to restore" on startup

Corrupted software

It isn't often that Apple gives specific directions about how to fix your problem! Restoring the iPhone 4 will erase everything on it, so make sure everything on the iPhone 4 is stored elsewhere prior to restoring. To restore, connect your iPhone 4 to a computer with iTunes installed. Click "Restore" on the iPhone 4 summary page (click on your iPhone icon on the left menu to find this page). Follow the directions to restore. If your iPhone 4 displays the text "Please wait. Very Low Battery," leave it plugged in. This charges the iPhone 4 enough to be able to restore. If the iPhone 4 hangs on this screen for long periods of time, you may need a new battery.

Force restore mode

If your iPhone 4 is hanging with an Apple logo, or exhibiting some other software problem that prevents iTunes from recognizing it, you can force it into recovery/restore mode and then use iTunes to restore the software.

If the device is powered off, plug one end of your USB cable into the iPhone 4 and leave the other end disconnected. Press down on the Home button, and keep holding it down while you plug the USB cable into your computer. After 5-10 seconds, you should see a "Please Connect to iTunes" image on the iPhone 4, and iTunes should prompt you to restore the software; follow the prompts and the instructions given above.

If the device is powered on, hold down both the power and home buttons until the device reboots and displays the "Connect to iTunes" image (generally, 5-15 seconds).

31 Comentarios

This is total baloney. I have had 2 new iphones with bad connections. I feel that the Iphone 4 was put together with bugs and they just wanted money coming in and didn't care that the product was sub par. They hav not rectified this problem as of yet. I don't have a diry antennae and I have a case for my Iphone. I feel it was a waste of money to buy this product.

Laura - Contestar

What I need to do, if is showing on Iphone 4

- Connect to iTunes -

1.What I did conect to itunes then come up message:

There is a problem with your iPhone.

Please visit the Service Answer Center to find answers to all your questions about service options, warranty and other processes in your country.

To find your nearest Apple Store, click here.

2. I visited the apple store and they try restore the iphone and hapend but nothing changed is come up again the message.

So, one man from enginering take a phone for check and he sai that may be is been replaced the sreen and is not from apple brand, so may be for that reson is showing mesage.

3. I open the phone and take out main board and put to good working phone. So what hapeand? same thing, same mesage come up. Never mind, I conect to itunes and hold button with power buton to restore phone again, but nothing changed same mesage on itunes.

4. I check the IMEII if is blocked or no and is unblocked.

Can anyone help with this issue?


Imrich001 - Contestar

how can you check if an IMEI is blocked or not?

EdfromMS -

same issue here, did you find any solution yet ?

Abdullah -

My daughter got hers wet, mine is stuck in the connect to iTunes screen, when hook up to PC it doesn't find the serial number and I can't restore it. Try the rice technique or a cloth over it with a hair dryer. I am gonna try the hair dryer tomorrow will let you know how it goes !

philh2413 -

I have an iPhone 4 and I can feel it vibrate, and if someone calls the led lights flashes. But I simply cannot see what's on the screen it's completely black. What do I do? I've already takin it apart to check circuit board but still nothing.and it is not water damage

marquis - Contestar

I have an iPhone 4 and I can feel it vibrate, and if someone calls the led lights flashes. But I simply cannot see what's on the screen it's completely black. What do I do? I've already takin it apart to check circuit board but still nothing.and it is not water damage

abhinay kumar - Contestar

my I phone 4 suddenly stopped functioning the screen is black & not charging at all even after a few hours of connecting to wall socket 08/02/2015

Is the battery dead?


kasturi nayak - Contestar

My iphone 4 just display a black screen,when people call it is ringing but i can neither receive hear any sound,its like a landline ringing on the pole,


Lettie Sithole -

My IPhone 4 has stopped ringing or vibrating. Otherwise is working fine. Must be looking at the phone to see if I am getting a call or message. Any suggestions??

lechat - Contestar

After updating my iphone 4 , stopped playing audio of any video on speaker , it works only on headset .

Hassan - Contestar

my iphone4 goes disconnect on me while I calling someone,look at the screen says searching and then NO SERVICE.what should I do,to gain back the connectivity?????

It keeps doing that everyday.please advise.Sami F.

samisharayha - Contestar

Make sure the date and time is correct on the iPhone, you is not correct, possibly not work

Rodrigo Dos Santos Costa -

the date and time are correct,the problem is the logo keeps on the screen nothing else happen,what should I do??????

samisharayha -

My iPhone 4 has lost its ability to alert me I have voicemail messages. I have been using the voicemail function ever since I received my phone and I have not made any changes. Here's the problem: When I touch the voicemail function icon, here's what's on the window that opens: To retrieve a voicemail first set a password and greeting. (I record and save the message. No where on the screen is there a place for a password.) The next screen: Setting up voicemail. (It never leaves that screen and I've waited upwards of five minutes and have tried numerous times to set up voicemail.) Any suggestions?

shudders - Contestar

Hi I've got a iphone 4. I've replaced the screen and back. Now the phone won't turn on and when connected to power it just beeps constantly every so often.

Plz help.

Biff - Contestar

Got iPhone 4...all audio quit working and people can't hear me either!! Is it my phone and how do I fix this or is it a network issue?

mccubbins77 - Contestar

I have a I phone 4 the battery needs to be charged all the time why is that I have friends that only have to charge there phone once every 2 days

Paula - Contestar

my phone doesnt swipe to turn on or swipe closed down but sari works?

Glenn Howe - Contestar



perperotie20 - Contestar

When am email comes in it doesn't sound so I don't hear it

lorraineliston - Contestar

When an email comes in I don't hear the sound

lorraineliston - Contestar

My iphone 4 went completely dead, no screen, no sound, would not charge etc. I took out the SIM card and put it back again, pressed the home and the top button at the same time for a few seconds and it came back on! Now working fine again!

judy - Contestar

My iPhone 4 has no display screen. I can hear all my device sounds but I cannot access anything because the screen is blank

aaboogs - Contestar

Hello, there am having the same problem, Have you found the solution to the problem? Can you please help me fix mine? I would be very happy thank's HAGD

Leonora Smith -

My iphone4 has frozen on the powering off icon and its been frozen for 7 hours and the battery has not died and i dont know what to do

cam - Contestar

when I chrage my iphone it open but its go to black again :( ! what can i do

jayceebalmes - Contestar

My Iphone 4 suddenly get to dead mode, when i try to force reset by pressing power and home button for more than 30 sec it doesn't comes back.

Sometime after 4/5 times tried it comes on back but with the time resetted to 1 jan 1970 @5.30AM

After loading it was searching for signal but doesn't get any response.

But when i try the phone to get connected to wifi date time get automatically set to current time and with 10-15 seconds the carrier service get connected or else it is not getting connected.

But Suddenly it gets switched off again and i need to do the same process again.

I tried factory reset also. But it is nothing happens

Can someone kindly help me in fixing this?


Murali krishna .L

muralikrishnal - Contestar

i did a factory reset on my iphone 4s and now is in recovery mode i try to do it a restore fro itunes but it looks a -1error what can i do?

klejdio123 1234 - Contestar

Jst got a second hand IPhone 4 n after loading the sim card it keeps saying no no network

Kagiso - Contestar

My phone goes to voicemail without even ringing first. Any ideas????

Terry Stalls - Contestar

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