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Apple logo flash at startup

New iPhone 12 Pro. At startup the Apple logo flashes super bright for a brief second then the screen goes dark for about 10 seconds before the Apple Logo re appears at normal brightness to finish the startup. I’ve had iPhones for years and never had the logo turn on and then off during startup. Is that Normal for the 12?

iPhone 12 Pro, iOS 14

Posted on Jan 14, 2021 6:41 PM

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Question marked as Top-ranking reply

Posted on Jan 30, 2021 6:42 AM

What I noticed after 6 replacement devices that the issue start only after 1st full charge.

device out of the box is working fine even after activation and moving the data .


working normally if partially charged , i kept my last replaced device for 3 days working normally with partially charged battery and when I decided to fully charge it to confirm if the issue will happen again or not. Guest what apple logo start to flash again. So i send it back to replace it.

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Feb 18, 2021 2:54 PM in response to Chrisckv

Unfortunately, a week has now passed since the restore from iTunes and the graph is still all gray, I think it's yet another bug.


I agree with other users by now it is clear that it is a problem that afflicts almost all devices, Apple has to run for cover with a bug fix




[Edited by Moderator]

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Feb 16, 2021 4:56 AM in response to Blue-per

I’ve had iPhones all my life and even the iPhone 11 and this is the first time that this happened to me. I went in for an upgrade for the iPhone 12, got the phone switched it on and got that flashing apple logo. I did a software update and it is still there. I took the phone in, they gave me a brand new phone, switched it on and it does the exact same thing. Took the phone back and got a new phone again and guess what, the new phone does exactly the same thing. I tried a hard reset nothing happened. So now I don’t know what to do. I had 3 phones that does exactly the same thing. So what now ??????????

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Feb 16, 2021 5:21 AM in response to Guest1972

Since it in no way affects the actual operation of the phone, I would wait to see if it is resolved in a future software release.


It's not causing any misoperation of the device, and at this point you have nine or more months of factory warranty coverage remaining in case it does.

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Feb 16, 2021 6:12 AM in response to Dogcow-Moof

Do the iphones 12, after update 14.3 and 14.4 have to restart with this apple logo flashing and being a natural sequence? Because almost everything iphone 12 restarts like this. It can be a new innovation of the company.And let us think that this is not the right start.

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Feb 16, 2021 7:18 AM in response to Blue-per

I am having the same problem with flashing Apple logo on boot. After it flashes I have to hold to power button again to get it to power on. I just got my Iphone 12 Pro Max last week. It did not do this at first power on, but after I loaded my backed up image from Iphone 7 plus. I have read that it's best to restore, and then load from backed up Iphone 12 backed up file. I am going to give it try, if it doesn't work then I'll be returning this for a refund.

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Feb 16, 2021 7:39 AM in response to Peterisil

No, they removed it because someone who was level 2 or higher reported it.


As has been previously posted many times, this is not the place to look for a “formal” answer from Apple for anything. To communicate with Apple use the Contact Support link at the top of this page. You still won’t get a “formal” answer unless one has been proposed by engineering and approved by Marketing and Apple’s legal department, but it will help Apple identify the extent of the problem and prioritize fixing it.


With any software product as complex as iOS at any point in time there are thousands of bugs. It is impossible to fix all of them, and any time you fix one there is a finite probability of causing another one. So the known bugs are sorted into a priority list, with the most critical ones (security vulnerabilities) at the top. Ones that cause the phone to crash are near the top, along with bugs that interfere with normal operation, followed by those that have a workaround. Bugs that are purely cosmetic and don’t affect operation or use of the phone, such as an Apple logo that flashes a couple of times when doing a cold start are pretty near the bottom. And as most people rarely (or never) actually turn off their phone this one affects amazingly few people.

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Feb 16, 2021 7:40 AM in response to Peterisil

No, it is not a "new feature" or "intended behavior". As I already wrote on a post in this thread, after reading other answers on the forum we deduced that the issue does not occur on iPhone 12/12 Pro that were shipped with iOS 14.1 or with iOS 14.2 pre-installed, it occurs exclusively on iPhone 12/12 Pro shipped in January (and later) with iOS 14.3 pre-installed.

And people who updated their operating systems from iOS 14.1/14.2 to iOS 14.3/14.4 did not encounter the flashing logo at startup, so it is not a "new innovation".

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Feb 17, 2021 2:05 PM in response to Blue-per

Just brought 12 Pro max a few days ago, went to start Netflix and froze on Netflix logo on start up. Tried going home by swiping and nothing. Then tried a force reboot with pressing volume up and volume down and press and hold side button and did a reboot and then had flashing apple logo for 10 seconds then started up okay, any solutions.

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Feb 17, 2021 4:57 PM in response to Blue-per

I just got an iPhone 12 with 14.1 and it booted just fine. I then proceeded to updated to 14.4 and is now facing this issue.

My case however is much severe as the device will not turn on after the blinks. I have encountered an instance that it refused to start up even after doing the power button hold for 6 times. Will probably have this one service/returned.

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Feb 17, 2021 5:57 PM in response to Blue-per

My husband and I both have the same thing happen. Bright flash of icon when booting up the phone, then black for a few secs then boots up. We are old school and in the habit of turning off our phones at night. Both were received in Jan and Feb 2021. Hope it can be resolved with a simple update.


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Feb 17, 2021 6:54 PM in response to Move-Yo

It is a harmless bug in the boot process. It doesn’t affect use of the phone in any way. Remember that the iPhone is a COMPUTER even though it is called an “iPhone”. It’s really just a very power pocket sized computer that, by the way, can also make phone calls. As the phone starts various processes are started sequentially, and the display goes on and off as this occurs. The fix, when it comes in a future release, will be to turn the display off during the boot process. However, you will know in your heart that even though you don’t see it, the Apple logo is going on and off in the dark, so to speak, as the phone starts up.

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Feb 17, 2021 6:59 PM in response to Move-Yo

Your issue sounds a little different; is it blinking just once, or multiple times? Also, the issue discussed so far in this thread seems to only affect iPhones delivered since the beginning of the year with iOS 14.3 pre-installed.


In any case, you can try restoring your phone to re-install iOS 14.4, in your case it might resolve the issue.

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Feb 18, 2021 11:07 AM in response to Dogcow-Moof

It appears that I may be in the minority, but my phone began without the flash issue (14.3 installed out of the box) I updated to 14.4 and still had no flash issue at startup and it ran for about a week seemingly normally. Then the flash issue began, for no apparent reason that I can put a finger on, and and a few days later the touchscreen began to become less responsive and a few days after that apps began to freeze. Only a restart would resolve the issues and then only for a short time. This is the 4th phone I’ve had that developed the flash issue and the only one that I held onto long enough to see what would happen over time. I have not added or changed any apps in any way so there should be no reason for apps that have been running fine to suddenly freeze. The phone has been treated gently — no drops, falls etc — so no reason the touch screen should be becoming less responsive. I’d submit that this issue might possibly be both hardware based AND software based at the same time since initially, and even after setup and usage for several days, the phone ran normally for a short period of time before it’s performance began to deteriorate. I’d also say that the issue may not be merely cosmetic for all users. I’m headed back to the Genius Bar to get their input, but I think they will likely suggest just replacing it with a new phone as they have the other 3 times. And I suspect the replacement phone will, within a week, develop the exact same issues.


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Apple logo flash at startup

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