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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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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.

1,089 replies

Jan 31, 2021 6:06 AM in response to jaimes64

No. He did check hardware again, as did the guy I spoke with on the phone before the appointment. He then restored OS, as I did earlier. Then he just blew it off like it was no big deal. I always believed if there is a glitch anywhere in a system, then there is a real problem somewhere.


As for the Android comment, my brother has been after me for years to switch. And after shelling out a thousand bucks for something that may not work tomorrow, it’s a thought for the next purchase.

Feb 1, 2021 1:02 PM in response to palm0x

My iPhone Pro Max 256 did it right after my icloud backup was done (I like to shutdown and restart after the restore is complete). It's good to run the phones battery all the way down before the first charge. So my phone in this case had this issue before it was even on a charger... probably had about 45% battery when I shut down and restarted it. It's not just caused from charging the phone... my wifes iPhone 12 Pro Max 128 did not have this issue though after it finished its restore and I rebooted it... it behaved perfectly normal. But after being on the charger overnight it also had the same problem... so its a couple of different things going on here... My phones were replaced twice so it's not the hardware either.

Feb 1, 2021 4:51 PM in response to Nicxb

So not only does my iPhone 12 Pro Pacific Blue have the original issues I posted about. Mine also charges really slow, I was at 5% at 08:39 plugged it in by 9:00am when I needed to jump on a Zoom meeting it was only at 15%. I made sure to pay attention that the time when I had read other posters mentioning the charging issue.

Feb 1, 2021 9:46 PM in response to Blue-per

I just received my iPhone 12 Pro this week (shipped with IOS 14.3) To my recollection, the phone did not flash the logo when I first received it but I could be wrong. I have noticed no effects from this apple logo flashing. It just makes me concerned that there could be a hardware issue. But since so many others are also having the same issue, it makes me think that it is indeed software related. I have not yet reached out to Apple about this. I was just looking into what others were saying.

Feb 1, 2021 11:02 PM in response to Blue-per

The logo happened to me and what I noticed is that if you go into recovery mode you’ll be met with a black screen but the computer will still recognize it, which is concerning. Nobody at Apple I talked has heard about this. They tried shipping out a refurbished phone. No thank you I just bought this phone I don’t really want something “almost new.” Not my fault it has problems. For now I will return this one and repurchase.

Feb 2, 2021 12:41 PM in response to Blue-per

Just picked up an iPhone 12 Pro this morning (2/2/21) and experienced the same problem. I’ve discovered that the quick logo flash occurs during startup but after about 5 seconds, the normal logo then appears for a couple seconds before presenting the unlock screen. It wasn’t necessary to hit the power on button again after first logo flash.


I talked to Verizon tech support. The person I worked with couldn’t reproduce the “flash logo”. Perhaps it’s a software issue (?). I’m running iOS 14.4.

Feb 2, 2021 6:57 PM in response to angry_elite

That’s not correct. Some front desk customer care are not aware including support people. But apple is well aware of this issue including their Senior Support Advisors and Senior Engineers. I had told in this post that I spoke to several engineers while I contacted them for support on this issue and the conversation lasted for over 2 hours with them. So don’t worry. They are aware and including developers like Zollotech.

Feb 3, 2021 3:21 AM in response to Blue-per

Does anybody know if this problem could affect somehow the phone? I`m not worried about the flashing logo itself (it does not bother me) but is there a possibility that this is triggered for something bigger behind/inside? As if there is a chance that this is affecting the phone it would make sense to think about a replacement... Is there any connection with that flashing logo with a bigger problem ?

(I had this problem with the very first time turning on the phone (right out of the box before any charging))

Feb 3, 2021 7:51 AM in response to vasil263

I'm glad I found this post. I am heaving the same issue on my iPhone 12 Pro. I thought is a hardware issue, I had a case with Apple, and someone looked at it at Apple store. They said they would ned to send to the lab to investigate, but my phone was within 15 days of receiving it, so I just replaced it with Rogers, since I bought through them.

The problem is that I am having the same issue on the new one too. It's true that first time I opened up, I brought my old phone, iPhone X to sync it and all my apps and settings got copied over. I am not sure if that affected it and if the issue would have been there if I just set up as new and not copying over any settings.

I tried a firmware upgrade to 14.4 first, that didn't fix it, and I tried to erase my phone from settings and using computer too by downloading the whole OS again, but that didn't fix it either.

Apple logo flash at startup

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