iFixit - Answers With Device "iPhone 4"

iPhone 4: How can I fix my disabled iPhone 4?

Sun, 26 Oct 2025 17:36:39 -0700

My brother's friend gave him an iPhone 4, and it's disabled. All we can do on it is slide the lock screen to call for an emergency. We've tried to connect it to iTunes and it's not working; it just says "error." At first, it said iTunes needs to be updated, so we updated it. Then it says "iTunes cannot connect to iPhone because it needs a passcode." It tells us to enter the passcode and try again, but the iPhone itself doesn't let us do that. I want to make the phone work for my brother.

⟐ Commented 10월 26, 2025 at 17:36 GMT-7

iPhone 4: iPhone 4 Disabled but cant connect to iTunes to fix it

Wed, 16 Jul 2025 14:16:00 -0700

I just got an iPhone 4. I set it up with a passcode so no one would go through it. My friend tried to unlock it, and now it's disabled to the point where I have to connect it to iTunes to enable it. I didn't have a chance to connect it to my iTunes before he did that. When I try to connect it to iTunes, it says that I have to remove the passcode, but I obviously can't. How do I fix this?

⟐ Commented 7월 16, 2025 at 14:16 GMT-7

iPhone 4: I can't hear my phone calls unless I put it on speaker.

Thu, 11 Dec 2025 10:07:46 -0700

I can't hear my phone calls unless I put my phone on speaker, but everyone can hear me fine—even if my iPhone is not placed on speaker. I've taken really good care of it and have only dropped it once, which was a few months ago. I just woke up the other morning after charging it, and it no longer works right. I've tried everything, including resetting it and placing half a Q-tip in the ear bud holder. I have an appointment at the Apple Store to have it checked out, but I live so far from the store that it would really be helpful for me to figure this out on my own. Does anyone know of a way to fix it? I would greatly appreciate it. =]

⟐ Commented 12월 11, 2025 at 10:07 GMT-7

iPhone 4: iPhone 4 is working but screen is black?

Sun, 08 Jun 2025 09:30:24 -0700

Yesterday I dropped my phone, and it was working fine when I picked it up to check it, but a few minutes later the screen went black. I know it was still working, because I was still receiving phone calls, texts, and mail. I even took a picture with it.

I've tried holding the home and lock button. I also tried holding the lock button while constantly pressing the home button, but I think the problem with this is that my home button barely worked before the drop. I've tried to reset it and put it in DFU mode, but nothing is working. :( Note that I can't take it to the shop because it's jailbroken.

⟐ Commented 6월 08, 2025 at 9:30 GMT-7

iPhone 4: Why aren't my volume buttons or ringer working?

Fri, 09 May 2025 09:41:49 -0700

For two weeks now, my side volume buttons haven't worked. When I try to change the volume, the little speaker picture doesn't even show up. I can't hear any of my incoming calls or text messages. But if I play music on my iPhone, I can hear it. So my speaker does work. I can't find any information about what I have to do. My phone is updated to iOS 5.1.1, and it isn't jailbroken.

⟐ Commented 5월 09, 2025 at 9:41 GMT-7

iPhone 4: When making calls, the other party can't hear me.

Fri, 01 Jul 2022 17:31:47 -0700

When I make a call through the handset, the other party can't hear me—but when I turn on speaker phone, they can hear me just fine. I can hear them, and the ringer works just fine.

Any thoughts?

Oh, and also, I can hear myself in the handset in an echo.

⟐ Answered 7월 01, 2022 at 17:31 GMT-7

iPhone 4: iPhone4 won't restore and shows Error 21

Wed, 12 Oct 2022 03:43:11 -0700

My phone won't turn on, but shows the Apple logo when I plug it in (either to the wall charger or the computer). Then, it goes to the Connect to iTunes screen and when I connect it to iTunes it tells me that I need to restore the phone. It will get all the way to "preparing iPhone for restore" then will say, "The iPhone could not be restored. An unknown error occurred (21)." I tried to disable my computer security, but it did the same thing. Does anyone know what else I could do to fix it? Please help!

⟐ Answered 10월 12, 2022 at 3:43 GMT-7

iPhone 4: iPhone 4 stuck on apple logo then turns off

Thu, 19 Jan 2023 04:45:01 -0700

The phone gets stuck on the Apple Logo for 20 secs then turns it self off. I have tried restoring, updated it, etc. When restoring it shows the progress bar but as soon as its done it just goes back to same issue. I have also entered my phone into DFU mode and doing a complete restore with no luck. Your help will be appreciated. Thanks in advance.

⟐ Answered 1월 19, 2023 at 4:45 GMT-7

iPhone 4: How can I turn off voice control on my iPhone 4?

Sun, 22 Mar 2020 04:50:57 -0700

My iPhone 4 is on voice control. How do I get it back to normal?

⟐ Commented 3월 22, 2020 at 4:50 GMT-7

iPhone 4: Why won't my iPhone 4 turn on?

Fri, 19 Jun 2020 23:26:41 -0700

My iPhone 4 isn't turning on. What can I try to get it working again?

⟐ Commented 6월 19, 2020 at 23:26 GMT-7

iPhone 4: My phone is not able to make or receive calls, why?

Tue, 07 Jan 2025 07:00:08 -0700

Despite being connected to the network, I am unable to make calls or receive calls on my iPhone 4.

When I try to make a call, the phone immediately shows "call failed" even without any ringing.

When others call my number, they report that my phone is 'disconnected.'

I am able to send and receive SMS messages, but no calls. What is wrong? How can I correct this? I am lost without the use of my phone.

⟐ Commented 1월 07, 2025 at 7:00 GMT-7

iPhone 4: The volume bar has disappeared. There's no sound in apps.

Wed, 17 May 2023 02:23:27 -0700

Hi,

When I press the + and - buttons, the volume icon appears, but the slider is empty. When I receive a call, I hear it ring, and I can hear the ringtones in the sound menu. However, the message/mail notifications don't make any noise, and I can't hear the sound menu.

I changed my LCD screen and upgraded my iPhone 4 to iOS 5 the same day. Now, I have a strange problem, and I don't know if the cause is an iOS 5 bug or a physical problem.

I restored the device many times on iOS 5, but it doesn't fix the problem. Here are some other symptoms:

During a phone call, if I put the conversation on speakers, it works and the volume bar reappears. I can control the volume with the + and - buttons. But when the conversation is over, the bar disappears again.
With the headphones, everything is ok!
I also noticed (only a few times) that when I do a repring (with changing the language of the phone), the volume slider reappears and works correctly for 2 or 3 seconds, before disappearing again.

My guess is that this is an iOS 5 problem, since the speakers work.

Can you please help me?

Thanks from Paris.

⟐ Answered 5월 17, 2023 at 2:23 GMT-7

iPhone 4: iPhone 4 keeps searching for signal

Sat, 08 Jul 2023 01:57:15 -0700

My iPhone 4 keeps "searching" for a network. And it doesn't register "No Sim" when I remove this sim. I've opened it up, but I'm not sure if the blue coil is damaged.

⟐ Answered 7월 08, 2023 at 1:57 GMT-7

iPhone 4: Why won't my music play?

Tue, 14 Jul 2020 09:02:52 -0700

My music will not make sound on my phone. It shows to be playing, but no sound can be heard. It does not work from the phone or using Bluetooth through my truck speakers. Calls and alert sounds work fine. I can even preview songs on iTunes, but my music has no sound. Please help.

Chris

⟐ Commented 7월 14, 2020 at 9:02 GMT-7

iPhone 4: Why is my iPhone not charging?

Sun, 21 Oct 2018 08:17:43 -0700

I plugged it in to charge one day and it just stopped charging. The battery ran down until it died completely.Someone took out the battery and charged it. Then, the phone worked normally until it died again.

⟐ Answered 10월 21, 2018 at 8:17 GMT-7

iPhone 4: Microphone not working when making/receiving calls

Thu, 11 Nov 2021 02:05:41 -0700

On voice memos, the microphone works fine, but when making a call or receiving one, people can't hear me—even when the speaker is on. What could be the cause of this problem, and how does one repair it?

⟐ Commented 11월 11, 2021 at 2:05 GMT-7

iPhone 4: Why does my sound not work anymore?

Sun, 18 Mar 2018 09:02:44 -0700

Hi all,

The problem I'm having with my iPhone is that I'm not able to listen to music anymore. My phone does play sounds, but only when it is docked or when my earphones are plugged in.

It does NOT work without earphones, and the volume slider does not show up when playing music.

However, it DOES make sounds when my alarm goes off or when I'm getting called. Ringtones work fine too.

Anyone know what could be the issue?

Thanks.

⟐ Commented 3월 18, 2018 at 9:02 GMT-7

iPhone 4: Why is my phone saying its disabled for 21 million minutes?

Wed, 03 Feb 2021 21:26:20 -0700

I broke my iPhone 4 screen a while back, so I repaired it with a new screen and I tried to go on it and its said iPhone disabled please try again in 21,958,460 minutes. Why?

⟐ Commented 2월 03, 2021 at 21:26 GMT-7

iPhone 4: What does error 2001 on iTunes mean?

Mon, 25 Feb 2019 04:51:37 -0700

I tried to restore my iPhone on iTunes when error code #2001 appeared. The error also shows a picture of a USB cable with an arrow and the iTunes app logo. What does this mean ?

⟐ Commented 2월 25, 2019 at 4:51 GMT-7

iPhone 4: Why is my iPhone 4 not turning on unless it's plugged in?

Mon, 02 Oct 2017 12:23:59 -0700

I recently replaced my cracked screen. I haven't had any problems with my phone at all. It charged, and I could call and send/receive text messages. Then, I went to a party without bringing my charger, and it was dying. When I looked at my phone it was dead. I plugged it in, and nothing happened. The Apple logo would just show up. After a while, it would turn on— but the date would say that it's December 31, and it was constantly searching for 100% battery life. I unplugged it and it turned off. So, I tried again and did a hard reset—but it still did the same thing. I plugged it into my computer, but it would turn on to just the logo and then turn off and keep looping every few seconds. I keep reading on the internet that people are having this same exact problem, but no one has answered them.

Also, while my phone is plugged into the wall charger and my phone is on, it will only last maybe two minutes. Then, this grey film appears and the phone turns off—and then because it's still on the charger, it turns back on.

⟐ Commented 10월 02, 2017 at 12:23 GMT-7