iPhone 12 Pro Max New iPhone 12 Pro Max Interesting thing. It starts the phone, but flashes once the apple logo starts and then disappears

[phobos60]

I did not experience this on the day of purchase. The brightness of the flash illuminated the Apple logo throughout.
He started doing it after a full 100 percent Mage Safe charge.
I did a factory reset. It didn't improve
The device does not produce any other error.
I don't know why I have to take this back.
(iOS 14.3) (telenor, Hungary)

When I launch the phone heavily with the Apple logo and then fall asleep. The phone reappears and starts up normally. Why?
VIDEO: https://www.icloud.com/iclouddrive/0z8W1UYvaaxKM7z74aWhpa1gQ#i12promax
VIDEO

Thanks.

 

[Harthag]

Funny you mention this. I was about to create a post for this and saw your post. I have the exact same behavior on my new 12 Pro Max received yesterday. The Apple logo is blindingly bright upon boot up and then vanishes, and then the phone starts up as normal. Have you contacted Apple about this?

*Edit- called Apple support and they are not helpful. The explanation is that OLED gets close to max brightness on boot up. Told him every iPhone I've ever had since the 4 has not done this, including my regular 12 Pro. Either the rep is just dumb or refuses to listen, or a combination.

I tried doing a DFU restore and the issue still exists. I haven't really seen anyone mention this issue anywhere by Googling, etc., this is such a random thing. I hope that there isn't a power surge at boot up causing the brightness to be at max, which could damage the phone.

 

[phobos60]

Funny you mention this. I was about to create a post for this and saw your post. I have the exact same behavior on my new 12 Pro Max received yesterday. The Apple logo is blindingly bright upon boot up and then vanishes, and then the phone starts up as normal. Have you contacted Apple about this?

*Edit- called Apple support and they are not helpful. The explanation is that OLED gets close to max brightness on boot up. Told him every iPhone I've ever had since the 4 has not done this, including my regular 12 Pro. Either the rep is just dumb or refuses to listen, or a combination.

I tried doing a DFU restore and the issue still exists. I haven't really seen anyone mention this issue anywhere by Googling, etc., this is such a random thing. I hope that there isn't a power surge at boot up causing the brightness to be at max, which could damage the phone.

I took it back. I bought another one. It also starts with high brightness, but the logo doesn’t go away yet. I don't know what could have triggered the other. I used a magsafe charger and it came out afterwards. The magsafe charger heats up the phone a lot. i can't believe it's good for the battery.

 

[Harthag]

I took it back. I bought another one. It also starts with high brightness, but the logo doesn’t go away yet. I don't know what could have triggered the other. I used a magsafe charger and it came out afterwards. The magsafe charger heats up the phone a lot. i can't believe it's good for the battery.

I did the same and bought another one. No problem with the new one. Very strange.

 

[TimePilot]

I did not experience this on the day of purchase. The brightness of the flash illuminated the Apple logo throughout.
He started doing it after a full 100 percent Mage Safe charge.
I did a factory reset. It didn't improve
The device does not produce any other error.
I don't know why I have to take this back.
(iOS 14.3) (telenor, Hungary)

When I launch the phone heavily with the Apple logo and then fall asleep. The phone reappears and starts up normally. Why?
VIDEO: https://www.icloud.com/iclouddrive/0z8W1UYvaaxKM7z74aWhpa1gQ#i12promax
VIDEO

Thanks.

I had the same thing happen on three different iPhone 12 Pro in the past week; it doesn't necessarily occur straight out of the box. The first one started doing it after a restore from backup through a wired connection to a MacBook. The second one booted up normally the first time, then again, same behavior after the restore. The bigger issue for me is that the backup would not restore completely, the apps would seem to load but the icons would remain dark, and would not launch.

On a third phone, that booted up normally from the store, I did a phone to phone direct transfer. It was ok for a couple of days, then I took off the MagSafe case, got the clipped lock sound after I put it back, so I rebooted the phone, and the single flash upon startup occurred again. Everything seems to be working normally though, so will wait for 14.4, or will go back to the Apple Store if there's other issues.

I'm wondering if there's an issue with the current full iOS 14.3 build, which is what they would've used when building a new batch of phones, and which is what a restore would use as well. Others may not see this behavior if they did an update to 14.3 from previous versions.

 

[Harthag]

I had the same thing happen on three different iPhone 12 Pro in the past week; it doesn't necessarily occur straight out of the box. The first one started doing it after a restore from backup through a wired connection to a MacBook. The second one booted up normally the first time, then again, same behavior after the restore. The bigger issue for me is that the backup would not restore completely, the apps would seem to load but the icons would remain dark, and would not launch.

On a third phone, that booted up normally from the store, I did a phone to phone direct transfer. It was ok for a couple of days, then I took off the MagSafe case, got the clipped lock sound after I put it back, so I rebooted the phone, and the single flash upon startup occurred again. Everything seems to be working normally though, so will wait for 14.4, or will go back to the Apple Store if there's other issues.

I'm wondering if there's an issue with the current full iOS 14.3 build, which is what they would've used when building a new batch of phones, and which is what a restore would use as well. Others may not see this behavior if they did an update to 14.3 from previous versions.

But doesn't boot up happen "before" loading of iOS? The instant you hit the power button that logo is blindingly bright, it's beyond max brightness it seemed, it's that bright. I would think the OS starts to load a second or two after you press the power button? Interestingly I also experienced battery drain overnight while in low power mode. Over the course of 8 hours it went from 100% to 96%, which really isn't bad. But the new phone I got that doesn't have this issue, was at 100% when I woke up this morning after 8 hours off charger in low power mode.

Considering I've - never - seen this happen on any iPhone, ever, and can't find anyone on the entire internet with this reported issue except the this thread, I thought it could be hardware related / maybe a power surge of sorts at boot up that can't be good for the phone / screen? That would make some sense considering the issue seemed to have creeped up on you guys after using a MagSafe case? Just thinking out loud, no factual data to back this up of course.

I'm tempted to try and restore the bad phone with an unsigned older IPSW but don't have the energy to go through all the work arounds at the moment. I would be curious if this still happened when running 14.2.

 

[TimePilot]

But doesn't boot up happen "before" loading of iOS? The instant you hit the power button that logo is blindingly bright, it's beyond max brightness it seemed, it's that bright. I would think the OS starts to load a second or two after you press the power button? Interestingly I also experienced battery drain overnight while in low power mode. Over the course of 8 hours it went from 100% to 96%, which really isn't bad. But the new phone I got that doesn't have this issue, was at 100% when I woke up this morning after 8 hours off charger in low power mode.

Considering I've - never - seen this happen on any iPhone, ever, and can't find anyone on the entire internet with this reported issue except the this thread, I thought it could be hardware related / maybe a power surge of sorts at boot up that can't be good for the phone / screen? That would make some sense considering the issue seemed to have creeped up on you guys after using a MagSafe case? Just thinking out loud, no factual data to back this up of course.

I'm tempted to try and restore the bad phone with an unsigned older IPSW but don't have the energy to go through all the work arounds at the moment. I would be curious if this still happened when running 14.2.

I'm really not sure what's happening. The latest (3rd) phone has gotten worse; it was working normally, other than the odd Apple logo flash at boot up. If I let the phone alone the boot procedure would then continue normally. But now, it won't turn on anymore after the Apple logo flashes once, I have to plug it in to get it to turn on.

I don't think it's related to any app because I didn't load anything different from my previous iPhone (12 mini), which is still working correctly.

What's really odd is that it was fine for 2 full days before the glitch occurred. I'll have a visit to the Genius Bar tomorrow to see if they have any further leads, or whether they can swap the phone again.

 

[phobos60]

I will charge my newer, replaced device to the magsafe. We'll see if the bug comes out. I'll report on it

 

[TimePilot]

I’ve now seen at least two similar questions on the Apple support discussion forums, so there’s certainly a recurring problem with some recent iPhone 12 Pros. Not sure it’s related to MagSafe either; perhaps people are not noticing it yet because they haven’t turned their phone off or rebooted since setting them up the past few days.

 

[phobos60]

my newer, already replaced device also experienced the same phenomenon after a 100% charge with a magsafe charger. So these are not unique cases.

 

[phobos60]

I’ve now seen at least two similar questions on the Apple support discussion forums, so there’s certainly a recurring problem with some recent iPhone 12 Pros. Not sure it’s related to MagSafe either; perhaps people are not noticing it yet because they haven’t turned their phone off or rebooted since setting them up the past few days.

It was clearly triggered by magsafe. I was watching directly.

 

[Harthag]

It was clearly triggered by magsafe. I was watching directly.

This is so interesting. What on earth with MagSafe would cause this to happen? Hopefully it’ll be addressed by Apple if more people experience it.

 

[Taz Mangus]

I have seen this behavior on my iPhone 12 Pro Max. I am not using a MagSafe charger.

 

[Harthag]

I have seen this behavior on my iPhone 12 Pro Max. I am not using a MagSafe charger.

Have you noticed any other issues creep up since this started to happen?

 

[phobos60]

I have seen this behavior on my iPhone 12 Pro Max. I am not using a MagSafe charger.

For me, it came out on both devices after the first 100% charge. According to them, it also occurs in the case of non-magsafe

 

[Harthag]

I

For me, it came out on both devices after the first 100% charge. According to them, it also occurs in the case of non-magsafe

I've charged my phone to 100% twice so far and the issue hasn't popped up. Fingers crossed.

 

[Taz Mangus]

Have you noticed any other issues creep up since this started to happen?

Not noticed any other issues. It appeared on first power on and several other instances of restart. Could be a software issue. The iPhone came installed with iOS 14.3.

 

[TimePilot]

To see if it's related to iOS 14.3, I installed 14.4 beta 2; same result. Rolling back to 14.3 did the same, and when I went to the Genius Bar, they restored the phone themselves and the single flash Apple logo persisted.

As it may be linked to a particular batch of iPhones, and because the issue doesn't necessarily manifest itself immediately out of the box, they issued a refund so that they could do look into it further internally, and I'll see if I pick up a 12 Pro again at a later date.

 

[TimePilot]

Have you noticed any other issues creep up since this started to happen?

For me, the issue was that on two of them, the iPhone would eventually refuse to boot up; I'd get the Apple logo flash, then nothing, unless I plugged the iPhone in or placed it on a wireless charger (not a MagSafe one).

One other clue, as it were, is that if I initiated a wired restore, the phone's screen stayed dark, and didn't display the Restore screen, as shown here:

If the Restore screen appears on your iPhone, iPad or iPod touch – Apple Support (UK)

If the Restore screen appears, connect your device to your computer and restart your device. You may also need to reinstall iOS or iPadOS.

support.apple.com

 

[Harthag]

To see if it's related to iOS 14.3, I installed 14.4 beta 2; same result. Rolling back to 14.3 did the same, and when I went to the Genius Bar, they restored the phone themselves and the single flash Apple logo persisted.

As it may be linked to a particular batch of iPhones, and because the issue doesn't necessarily manifest itself immediately out of the box, they issued a refund so that they could do look into it further internally, and I'll see if I pick up a 12 Pro again at a later date.

For me, the issue was that on two of them, the iPhone would eventually refuse to boot up; I'd get the Apple logo flash, then nothing, unless I plugged the iPhone in or placed it on a wireless charger (not a MagSafe one).

One other clue, as it were, is that if I initiated a wired restore, the phone's screen stayed dark, and didn't display the Restore screen, as shown here:

If the Restore screen appears on your iPhone, iPad or iPod touch – Apple Support (UK)

If the Restore screen appears, connect your device to your computer and restart your device. You may also need to reinstall iOS or iPadOS.

support.apple.com

Thanks for posting. Glad I returned the affected phone for a new one. When I set up the new phone from the encrypted backup of the "bad" phone I noticed the restore screen on the phone was white with a black Apple logo. I can't recall seeing that screen before either. Everything's been fine on the new phone. Hopefully it is just an isolated batch of phones, it sounds like based on your experiences it could be hardware related.

 

[Fred Zed]

Looked at the video. Looks like truetone kicking on and off during boot up.

 

[phobos60]

Thanks for posting. Glad I returned the affected phone for a new one. When I set up the new phone from the encrypted backup of the "bad" phone I noticed the restore screen on the phone was white with a black Apple logo. I can't recall seeing that screen before either. Everything's been fine on the new phone. Hopefully it is just an isolated batch of phones, it sounds like based on your experiences it could be hardware related.

my second phone is already making this mistake. came up after charging at both. affects the new series. i don't think it's a hardware failure

 

[Harthag]

Well now the new phone is also doing it again! Hopefully just a little software / bootloader glitch that will be ironed out over time. If not, that's what AC+ is for.

 

[TimePilot]

Out of curiosity, do you know the serial numbers of the problematic iPhones? Just the first two or three digits will help narrow down where these were produced, which could give a clue of where the error originated. All three iPhones that I returned started with F17.

 

[Fred Zed]

Out of curiosity, do you know the serial numbers of the problematic iPhones? Just the first two or three digits will help narrow down where these were produced, which could give a clue of where the error originated. All three iPhones that I returned started with F17.

There is no such thing. I had three G0ND devices with various defects. All late builds. Some other posted posted earlier saying his replacement G0ND was perfect according to him. In essence there is no good or bad serial number. It’s a myth. Same as good or bad display serials. Myth.