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What to do if your iPhone 6S Plus is not turning on, black screen issue, other issues

Hello and welcome to our new #iPhone6SPlus troubleshooting article. This post is a response to a rather increasing cases of iPhone 6, 6S, and 6S Plus devices experiencing power problems. We hope you’ll find it helpful.

If you are looking for solutions to your own #iOS issue, you can contact us by using the link provided at the bottom of this page.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Below are specific topics we’re bringing for you today:

Problem 1: iPhone 6 rings during calls but screen stays black

I have an iPhone 6 that the screen randomly went black on and nothing that I have found on the internet and tried has worked. The day before the screen went black, it’s as if someone was controlling the phone…without touching anything my phone I watched it attempt to go into Facebook app and Safari. This went on for at least 10 minutes before shutting the phone down and restarting it. I charged the phone overnight as I always do and didn’t use it again that day. The next day the phone seemed to work fine for the first couple of hours, but as I was sending a text, the screen gradually faded and went black completely. I have tried doing a hard reset (home button and power button), restoring and resetting DFU mode in ITunes. iTunes recognizes the phone and went through the resetting process and said that it was ready to use, but screen is still black. I checked for water damage by looking at the light where the SIM card is and didn’t see any red light. I cleaned the power port and used several different cords to make sure the battery wasn’t dead. I don’t think it’s a battery issue, because I left the phone alone for over a week and the battery died. I know this because when I called the phone it went straight to voicemail. I charged it overnight and although it didn’t make a difference to the screen I know it charged because when I called back today it rang 5-6 times before going to voicemail. I didn’t buy the phone from Apple (I bought it from a friend who had no issues with it other than the speaker crackling when headphones were plugged in), so I can’t take it to them for repair. Any ideas on what the issue could be and how I can fix it myself? Any help will be greatly appreciated! — Amy

Solution: Hi Amy. Given the fact that the screen stayed black after  updating it via DFU mode, the only logical reason that we can think of is bad hardware. Since you did not provide any useful history about your device, we can’t tell you exactly what’s going on but if a forced software update via DFU mode did not help, it’s very likely that you have a hardware malfunction at hand. Common reasons for an issue like this includes accidentally dropping/ physically impacting the device, and/or water damage. Since iPhone 6 and iPhone 6S Plus devices do not have water-resistance protection, there’s a chance that it may still be damaged by water even though the built-in Liquid Contact Indicators (LCI) were not triggered.

We think that the problem has something to do with a bad screen assembly. This assembly has three major components — digitizer, monitor, and flex cable. The monitor is the part the displays the images that you see. In order to interact with the operating system, a digitizer, which is on top of the monitor, converts analog finger touches into digital signals. These signals in turn are transmitted to the operating system via flex cable. So, the reason why the phone seemed to act on its own, opening apps and all, may be caused by a faulty digitizer. The current black screen state must be related to that.

To fix the problem, you must let a professional take a look at the hardware so you’ll be advised if replacing the screen assembly will help. If you can no longer bring the device to Apple at this time, try to send the phone in to a good independent third party shop. If your phone was exposed to liquid before, make sure that you mention that to the technician so they can attemtpt to clean and dry the phone properly before performing hardware diagnostics.

Problem 2: iPhone 6S stuck in Apple logo screen, boot loop

iPhone 6s Plus suddenly started continuously going from white Apple logo to a blank blue/black screen. I’ve held down the lock button and the Home button at the same time and it’ll bring the white apple logo screen up and go right back to doing the same routine all over again. Have tried holding just the lock button down and it just goes either to the blank screen or white screen and again continues switching from screen to screen. It won’t stop and show the lock screen to put my password in and it won’t do anything to allow me to even attempt to get into my phone. When this started my phone wasn’t dead, had never done this before, and started doing this out of nowhere after working perfectly fine like normal, like every other day with no problems.

I have a Google Chromebook for a laptop which won’t allow me to download iTunes being an all Google computer. Is there a way to fix this without iTunes? (If not, I can use a computer from a friend). Why did this start and what caused it? How can this get fixed? — Becky

Solution: Hi Becky. Assuming your phone was never misused (not dropped, physically impacted, or exposed to elements/water), the reason may be software-related. You may have installed an incompatible or malicious app, or that the software may encountered an error. An operating system like iOS is designed to work around minor errors to allow it to do other tasks but since the problem appears at the boot up phase, there’s nothing much that you can do. To see if our suspicion about a possible software error is causing it, you must try to update the device via DFU mode. Here’s how:

  1. In your computer, close all active apps.
  2. Open iTunes.
  3. Turn off your iPhone. If you can’t turn it off normally, let the battery drain to 0% so the phone powers down on its own. Charge the phone for at least an hour without attempting to turn it on.
  4. Connect your iPhone to the computer via USB cable.
  5. Press and hold the Power button for at least 3 seconds.
  6. Press and hold the Volume Down button on the left side of the iPhone while continuing to hold the Power button. Be sure to hold both Power and Volume Down keys for 10 seconds. If Apple logo appears at this time, repeat steps 5 and 6. Apple logo should not show at all.
  7. Continue to hold Volume Down key for another 5 seconds. If the Plug into iTunes screen is displayed, repeat steps 5-7. Plug into iTunes screen should not show up.
  8. You’ll know that your phone is in DFU mode if the screen remains black. Your computer should then tell you that iTunes has detected an iPhone.
  9. Follow the on-screen steps in your computer to do a full recovery.

Remember, doing a full restore via DFU Mode only affects the software aspect of this problem. If nothing happens after doing it, or if you’ll be unable to even complete the entire procedure, that means bad hardware must be to blame. In this case, you must contact Apple for repair or replacement.

Problem 3: What to do if your iPhone 6S Plus is not turning on

Hello. Thank you for your cool website. I have read all your instruction about dead iPhones but unfortunately, my iPhone problem is not listed in your instruction list. Please can you help me? My Iphone 6S plus has a problem like this: when I buy it at the first days at the screen appeared vertical lines and it keeps on restarting. In those days when I open or install multiple apps at the same times the screen goes to stop working and after a minute it goes to restarting and now after two days it goes dead and nothing appear in the screen. And the PC can not recognize it.

Also I have tried power+home button instruction but the Apple logo does not appear now. It looks like charging but not full functional like normal charging because the charger adapter is just warming up a little it looks its not charging like normal. but now it look its completely dead . Now what can I do please can you help me? Thank you very much. Best Regards. — Behnod

Solution: Hi Behnod. The iPhone 6 and iPhone 6S devices were released about two years ago so we assume your device is not brand new when you got it. This means that the phone may already be affected by problems even before you bought it. In fact, we think that’s exactly the situation since you noticed problems a few days after receiving the phone.

As far as troubleshooting is concerned, you’re only limited to the basic software solutions that we provide in this blog. These solutions include

  • restarting the phone,
  • uninstalling apps
  • restoring the phone as a new device, and at most,
  • restoring via DFU mode (steps provided above)

If you’ve already attempted these solutions before contacting us and there was no positive result at all, that’s an indication that hardware malfunction is preventing the device from booting up. In this situation, it can be due to:

  • a bad charging cable and/or adapter
  • malfunctioning battery
  • a damaged screen (phone must still be turning on)
  • or other unknown hardware failure.

Check the accessories

Does your phone appear to be charging because it’s warming up when connected to charger? or does it remain unaffected when charging? In any case, the first thing that you want to do is to ensure that you’re using good working charging cable and adapter. If you have another iPhone 6, try using its charging cable and adapter to charge the problematic device. If you’re lucky, you may be able to fix the problem by doing this common sense step.

As part of this troubleshooting procedure, be sure to also do an ocular inspection of the charging port. There may be debris, lint, or foreign object that causes poor connection between the charging cable and the metallic contacts in the port. If possible, try to use some form of magnification like the ones used in electronic shops so you can see the parts. If you think the charging port may be blocked or dirty, try to use a can of compressed air to dislodge particles inside. Avoid sticking something inside as there’s a chance that you’ll damage or bend the pins.

Verify if the phone turns on

There’s a difference between a damaged screen problem and iPhone not turning issues. The former means that the phone still powers on but the screen no longer functions. In this case, you should still be able to ring the phone and it should still be making sound notifications and vibrations. To fix this issue, you must replace the screen assembly.

The latter means that the phone is totally dead system-wide. The best way to determine this is by ringing your number or sending a message to it. If it doesn’t ring, vibrate, or make sound notifications, you can bet is completely off. (An issue like this may be caused by a few things including the items mentioned below:)

  • a bad charging cable and/or adapter
  • malfunctioning battery
  • a damaged screen (phone must still be turning on)
  • or other unknown hardware failure.

To fix the problem, you’ll have to let a professional check the hardware so proper diagnostics can be done. If Apple support is out of the question, bring it to a third party shop.

 


Engage with us

If you happen to have a problem with your own iPhone, let us know about it and we will do our best to post them and their solutions  in our upcoming articles. You can use this link to contact us for assistance. We can’t guarantee an answer to every question but rest assured that we will exhaust everything on our end to help you.

Be as detailed as possible when describing your problem to help us diagnose your issue easily. If you can include error messages, popups, attempted troubleshooting steps, and circumstances leading to the problem, that would be very helpful.

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