Why does my iPhone 6s won’t turn on, stuck in black screen during startup [Troubleshooting Guide]

The #Apple iPhone 6s (#iPhone6s)has been around for almost two years now and yet, it still appears among the best buy smartphones to date. Since its official launch on the 9th of September 2015, this iPhone variant still proves its best even with the presence of Apple’s newest iPhone flagship devices, the iPhone 7 and 7 Plus. But then again, with age and other factors, the chance of this iPhone to become susceptible to performance issues is also getting higher especially to those among the first to have this device soon after the official roll out.

Among the most common problems encountered by prior owners of the iPhone 6s is on power malfunctions. And this post will address a pertinent device issue in which the iPhone 6s seems to be dead as it won’t power on or turns on but gets stuck on black screen during start-up. If you are among those who have been facing the same trouble with the iPhone 6s, then I suggest reading on so as to learn what may have possibly caused such symptoms to occur and what needs to be done in order to fix the problem on your end unless a hardware problem is to blame.

But before we jump right into our troubleshooting, if you have other issues with your iPhone, make sure you drop by our troubleshooting page because we’ve already addressed a lot of issues reported by our readers. Find issues that are similar with yours and use the solutions we suggested. If they don’t work for you or if you need more help, fill up our iPhone problems questionnaire and give us more accurate information about your problem so we can give you the best solution.

Possible reasons as to why your iPhone 6s won’t turn on or stuck on black screen

Setting aside the possibility of a hardware damage (physical or liquid damage) existing on the phone, the problem can be triggered by some software glitches or corrupted apps. There have been a number of similar cases where the iPhone refused to turn on, stuck on black screen, or can’t get past the Apple logo due to a bad app or software.

A common thought however, as to why these symptoms occur is that the device must have been damaged or some components have malfunctioned. But in contrary, the iPhone can also show any of these symptoms due to apps malfunction or software bugs. Another factor that can put your iPhone into this situation is insufficient charge or other issues tied to the iPhone’s battery. Keep on reading to learn how each of these factors can affect or hinder your iPhone’s power functions.

Software-related issues. Several instances of an iPhone that does not power on or stays in black screen are linked to a faulty program, corrupted firmware, as well as iOS crashes. So you might ask how a faulty program or app can prevent your iPhone from turning on? The answer is simple. Your phone is a system structure that is comprised of software and hardware components. Each of the phone’s hardware components is programmed to work with the software. For example, the Power button is programmed to perform a specific task which is to turn the phone on or off. Now let’s say if a certain app has malfunctioned and has corrupted the program structure for the Power button, then most likely the power button won’t function as it should. And that’s when software-related power symptoms are perceived by end-users. Fortunately, device problems that are triggered by software malfunctions can be resolved with some workarounds, which means that you won’t have to take your device to a technician for the problem to get fixed.

Insufficient charge. Needless to say, your device won’t turn on without enough charge to power on. Your iPhone can run out of power anytime especially when used heavily over time. This can usually happen when playing games, streaming videos and music online, or when multitasking with several apps on your device. When the battery is completely drained or depleted, your iPhone may remain in the black screen state even when connected to a charger for several minutes. However, everything must be working fine if you connect it to a charger and then it charged for at least an hour.

Physical or liquid damage. It is also possible that your iPhone 6s won’t turn on due to some damaged components. Unfortunately, cases like this would already require a technician’s aid to get fixed. A physical damage can occur after an instance where the phone was dropped or suffered from a hard physical impact. Liquid damage on the other hand would likely transpire after having your iPhone exposed to any sort of liquid or dropped it in the water. Symptoms from liquid damage may not show immediately but once the water penetrates and causes damage to a certain component that is when the problem starts.

iOS update bricking. There have been several instances where an iPhone ended up being bricked by a major software update. As a matter of fact, you can see a number of similar complaints raised by iPhone 6s owners, telling that their phone won’t turn on, stuck on black screen or white Apple logo after updating to iOS 10 or the latest iOS 10.2. No need to panic though because you still can do something to fix this problem and get your iPhone back up and running again.

Potential Solutions and Recommended Workarounds

The best way to start when troubleshooting device issues is to determine what has happened before the symptoms began to manifest. Did the problem start after making some changes to the settings, or after installing an application or software update? Doing so will help you isolate, diagnose, and resolve the underlying cause. Proceed to the next applicable method if necessary.

Highlighted below are some recommended workarounds, which can potentially fix your iPhone 6s that won’t turn on or get stuck in black screen due to some reasons, known or unknown. Again, these methods will only work if the problem lies within the iPhone software or given that there is no damage to any of the hardware components. To determine whether the problem has already been fixed, be sure to test your iPhone after performing any of these applicable solutions.

The following are standard workarounds that are used to deal with power issues on the iPhone 6s. You may give any of these methods a try on your end and see the result.

Step 1. Connect your iPhone to a power source using the supplied USB cable.

To eliminate the possibility that your iPhone went dead because it ran completely out of charge, connect it to a power source using the original charger. Let it charge for about an hour and then try to turn on your phone.

If your iPhone is not charging or the charging indicator does not appear on the screen within an hour of charging, or you see the Connect to Power screen, try to check the jack, USB cable, and power adapter and make sure that everything is plugged in firmly, not damaged, and free of debris. You can also try a different USB cable or power adapter to isolate whether the problem is caused by bad charging paraphernalia. You may have to deal with charging issues first for this might be the main reason as to why you can’t get your iPhone 6s to turn on or complete the start-up process.

Step 2. Force your iPhone to restart.

A force restart is often used to deal with minor and major software-related issues that occur on the iPhone including won’t turn on, stuck on black screen or Apple logo, random reboots and system crashes. It is considered safe and effective workaround since you will not lose your contents in the process. To perform a force restart on your iPhone 6s, press and hold the Sleep/Wake and Home buttons at the same time, for at least 10 seconds until the Apple logo appears.

Step 3. Restore your iPhone 6s via iTunes.

If a software update left your iPhone 6s stuck on black screen or does not power on, you’ll be able to fix it through iTunes. The following steps will help you get through the entire restore process via iTunes:

  1. Secure a computer with the latest version of iTunes that supports the iOS 10 platform.
  2. Connect your iPhone to the computer using the supplied USB cable.
  3. Open iTunes on the computer.
  4. On your iPhone, press and hold the Power (Sleep/Wake) and Home buttons simultaneously until you get to the Recovery Mode screen and you are prompted to plug your iPhone into iTunes.
  5. If prompted with the option to Update or Restore in iTunes, select the Update option to proceed with iOS 10 upgrade. Restore option on the other hand will let you restore to a previous backup.
  6. Wait until your iPhone finishes updating iOS and you may then proceed with device setup.

If you were able to backup using iTunes and need to do a full restore, it should be fairly quick but if you haven’t then you may opt to restore your apps via iCloud. The latter method requires a stable Wi-Fi connection and could take some time to finish especially if you have lots of apps installed.

Performing an iTunes restore can also help when dealing with other major software issues like when your iPhone is stuck on the Apple logo, or red or blue screen for a long time during start-up after installing a major software update.

Step 4. Use alternative iOS repair tools for your iPhone 6s.

Due to the augmenting number of issues affecting various iOS devices including the iPhone 6s, a lot of iOS repair solutions are also made available at the App Store nowadays. If none of the workarounds is able to fix the problem, then you might as well consider giving any of these tools a try and see how capable they are to serve such purpose. Generally, these software tools integrate several options, including commands to deal with iOS upgrade failures. Be sure to note though that some of these iOS repair tools would erase all data and settings on your device. That being said, you might as well consider backing up your device beforehand.

Step 5. Contact Apple Support

You may consider setting up service with an Apple technician if your iPhone 6s remains stuck on black screen, or won’t turn on after charging, force restarting or following the suggested workarounds in this content. This time, there is a higher chance that the problem might be due to a damaged hardware component on the iPhone, which would then require service.

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If you have other problems with your iOS device including iPhone 6s, you may visit our Troubleshooting Page or complete and submit this form to get further assistance from our support team. Just be sure to provide us with all necessary information, such as your iOS device model, as well as more details about the issue you have with your device. For example, when did the problem start to occur or what you did before the problem shows. This way, it would be easier for us to determine the main cause(s) and help you towards finding the best possible solution available.