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

Reply
Question marked as Top-ranking reply

Posted on Jan 30, 2021 5:37 AM

After more than two weeks, I think that it is time to sum up the situation: the "flashing Apple logo" issue described by Blue-per does not occur when we unbox and boot the iPhone 12 (mini)/12 Pro (Max) for the first time, it occurs when the iPhone is already set up.

In most cases the phone performs normally after it boots up. Some users found hardware problems when using their new iPhone (phone needing to be connected to power in order to boot up, screen burn-in, battery charges very slowly, camera not taking HDR photos, etc.).

In my opinion those problems are not related with the flashing logo at startup, because they are very different from each other and they are isolated cases. They are just coincidences.

That does not mean that the flashing logo is not an issue: there are iPhone 12/12 Pro which boots with the (classic) steady Apple logo and some iPhone 12/12 Pro that do not, so it is obviously not a normal thing. It is not a "new feature" or "expected behavior".


After reading other answers on the forum, we can deduce 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 (mainly) occurs on iPhone 12/12 Pro shipped in January with iOS 14.3 pre-installed. As a matter of fact a lot of people returned the device during the last weeks and got a new one with the same problem.

Now, we suppose (and hope) that the issue is part of iOS 14.3 and not in the hardware of the phone. In this case Apple should be able to fix it with an update, maybe already with a sub-dot-release (iOS 14.4.X) or later with iOS 14.5. There are some comments in favor of that supposition too, where people noticed that issue after updating from iOS 14.2 to iOS 14.3.


On the other hand, it is strange that (most) iPhones who updated the operating system from 14.2 to 14.3 did not experience the issue. And it is even stranger that I read a reply from a user who encountered the problem already on iOS 14.2. Those facts contradict our supposition above, and maybe the flashing logo has nothing to do with iOS 14.3.


I am sure a lot of people have this problem too; they do not notice it, because nowadays we do not shutdown and restart our phones very often. And even if they do that, they (probably) don't keep looking at the boot screen for issues.

It is very hard for us to guess if it is a software or a hardware problem. Only Apple can give us an official answer, and in order to solve the problem as soon as possible I ask you to continue upvoting this and other similar posts (clicking on "I have this question too"), commenting if you have some news from Apple and reporting the case to the Apple Support.

1,089 replies

Feb 26, 2021 11:15 AM in response to merthuzur

merthuzur wrote:

The question is , if issue is software, why it’s appearing just the iPhones which produced after week 51?


Because you're basing that on the very, very limited number of people who are posting here.


Regardless, there is still no link between the flash and any actual issue with operation of the phone; if you never reboot your phone you will never see it.

Feb 27, 2021 10:12 AM in response to Blue-per

I got my apple new iphone 12 pro max in last week and using it from 3-4 days. After setting up my phone it upgraded the software to 14.4. Now when I switched off and switched on the my phone. The apple logo flashed on the screen and then disappeared. After 5 seconds it appeared again and then my phone switched on. I have contact online apple help and they want me to go to the apple service centre to repair it.

Any suggestions

Feb 27, 2021 10:16 AM in response to VipanBiala

vipsnbiala— good luck with that. Scroll above and you’ll see that many of us went to the store and we got varied responses. They haven’t fixed any of them. A few people got phones replaced but it took numerous replacements for some of them to get a phone that didn’t do this. Many of us have also updated or reinstalled the operating system to no avail. Let us know how it works.

Mar 1, 2021 11:03 AM in response to MaryanneNYC

Like everyone else on here I am having the same issue!!! I have replaced three devices now all with the same issue. Apple has not been very helpful with this issue as well, only offering to run a diagnostics and to either take into an Apple Store or mail it in.


I have used the link and have determined that all units were manufactured January 2021. However, all were manufactured in China, Zhengzhou and the serial numbers started with F2LF4.


Mar 1, 2021 1:03 PM in response to Appl_DuBz

No I had a serial number GONF assembled in the US. It had the logo flash and was very bright. Exchanged it for F2LF Foxconn and it didn’t have the logo flash after setup/restore from back up. I turned it off several times to check and see and it didn’t do it and when I shut it off for the night and turned on in the am it started on this new one but not as bright and not as fast of a flash. But anything made after Dec. 31 usually does it no matter the serial #

Mar 3, 2021 12:31 PM in response to mayungkei

Let me share official apple feedback for flashing issue.

  • we are not able to fix the issue now
  • under investigation, assume that it will be fixed with new sw upgrade but we dont know when...just wait
  • no exchange
  • not able to repair, come and take your iphone(still in apple authorised service )
  • no refund, you didnt buy from apple and passed 7 days.


so this is the behaivour of apple last 15 days.


Mar 5, 2021 8:10 AM in response to Blue-per

Omg I am having the same issue..as of now and the glitching is very subtle I've only had my iphone 12 pro max for 3 days now but I feel like I should go in-store and see a tech representative. I was told it was a software issue and I hope they will be able to fix it, because it would suck to have to get a new phone have to do the start up process all over again..

Mar 11, 2021 3:50 PM in response to Blue-per

I’ve been having same issue: I took the phone to an apple store: they told me they needed to replace the logic board aka mother board to fix issue or give me a refurbished phone because I bought my phone from my provider not directly from them.


im so upset: I paid so much money on this phone ... this phone is only a month old and no one wants to help resolve this issue for me .. I don’t think I should have to change the brainstorm of the phone with a new mother board nor get a refurbished one given it’s only one month old ...


further: my phone provider is saying apple needs to fix it because they manufactured it and apple is saying I need to go back to provider for help on new phone. I’m getting run around ...


Apple produced an expensive defective phone ... n sold it to us ... now we are suffering and still no resolution .. :(


[Image Edited by Moderator to Remove Personal Information]



Mar 25, 2021 8:01 PM in response to Cappiedog11

No, it is most definitely NOT “normal” iPhone 12 behavior. 3 other members of my family have iPhone 12’s and none of them has the flash logo at startup. I also have friends with iPhone 12’s who purchased early on and they also do not have the logo flash on startup.

It appears that this is an issue that only appeared on iPhones that were produced after mid December 2020.

Mar 26, 2021 10:46 AM in response to Blue-per

I have the same issue, on an iPhone 12 (neither Pro nor Pro Max, just iPhone 12). I spoke today with an Apple advisor who got me to reset the phone to factory settings, to no avail. But her assumption was that if a factory setting reset won't cure it this may be hardware-related.


I also have another issue: the battery warning levels on this iPhone seem to be only 20% and 10%. There is no 5% warning. Does anyone have the same problem (it's probably off-topic for this thread, but it may be related to this issue)?

Apr 6, 2021 10:13 AM in response to palm0x

Hello,

I’ve changed my phone from 6S to 12 end of February and I had the flashing logo apple but I had to press very hard to switch on my phone. I’ve returned it and got a new one but on the new phone, it recognized a wifi connection but it remained on 3 or 4 G. So I’ve returned the phone for the 2nd time and got a new one on March 30th. Everything went well until yesterday where when I switched on my phone, the logo flashes then disappears and then I have to press the on button for the phone to light on. I have been on chat with Apple Assistance and the only thing O was told is to return the phone. It doesn’t have a week yet and already having the issue. And my IOS is 14.4.2. So I don’t think that the issue comes with IOS. Do you think that I should return again my phone?

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Apple logo flash at startup

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.