Why did my iPhone 14 screen go black?

Apple Store. AT&T stores are staffed with sales people, not technicians.

And repeating my post, directly above yours:

While it is called an iPhone, it is actually a very powerful pocket-sized computer that can incidentally make phone calls. And like all computers, it will crash occasionally, and that’s what happened. To minimize the probability of that happening it may pay to restart it occasionally (weekly, for example)→Restart your iPhone - Apple Support

Restarting will also frequently fix slow response problems, just like it does on bigger computers.

There is no bug for Apple to fix. And asking for Apple to do anything in this user-to-user forum where Apple’s participation is minimal is a waste of time.

Here is how to force-restart your phone:

 then

• Press and quickly release VOLUME DOWN

     then

• Hold the SIDE button until an Apple logo appears (15-30 seconds), ignoring "slide to power off" if it appears

The operative word here is QUICKLY; and try it a couple of times, the timing is a little tricky.

I was having this issue, and the vol-up, vol-down, side button fix stopped working for me, the iPhone was just a brick and nothing I did worked.

I eventually got back to the UK and took it to an Apple Store. They plugged it in and eventually got it to turn on, I’m not sure exactly how, it did take about 10 minutes.

Once on we made a backup of the data and reset the device back to factory settings. Then ran through the device set-up again and restored the data from the backup.

I'm not sure how important it is but when I first got the device I originally set it up by holding it near my old phone and having it do an auto-setup from the previous device, this time I set it up from the backup.

Also, after some discussion with the Apple guy he told me he’d seen iPhone 14 devices have problems where the image on the Home/Lock Screen is a custom image. My device does have a custom image on the Lock and Home Screens (same image on both). Once my device had finished setting up I checked (press and hold the Lock Screen to see this) and the device showed that the custom image was no longer in my Photos folder and couldn’t be found on the cloud. The image was still showing on the Lock/Home Screens and looked fine but the link to the original image was gone (I do remember deleting it, assuming I didn’t need to keep it).

I’m not sure why the device even reported that it had lost the link to the original image, but since it was reporting it and the Apple guy said this might be a problem I changed to a standard Apple image for both Lock and Home Screen.

I’ve also switched off Raise To Wake.

I don’t know which of the following fixed the issue but it’s been 2 months now and the phone’s worked flawlessly

• Reset and restore from backup
• Changing the Home/Lock Screen to non-custom
• Removing Raise To Wake

Hopefully this helps other for whom the vol-up, vol-down, side button fix doesn’t work.

I had the problem and none of the regular solutions actually fixed the issue for me, they just made it a bit better for a short time. The two things that actually fixed it for me were

• Back up the device (to the cloud or local computer or whatever), reset the device and set up from scratch again, during the setup process restore your data from the backup

• Changing the Home/Lock Screen to standard images

I'm not sure which of these things actually fixed it for me but one (or both combined) definitely has, my phone has been working without any issues for 2 months (I charge it overnight and don't force close any apps)

I haven't tried changing the Home/Lock Screen images back to a custom image yet, I'm happy with the new 'Earth Detail, Astronomy' screen I have, I'll probably try it one day to check though.

I fixed the problem by charging it an extra 30 minutes and then holding the buttons for the fix.

I didn’t understand the volume up and down and all around stuff so I just powered off and back on, and my original pic was back on my Home Screen.

Press Vol UP 1 time

Then volume DOWN 1 time

Then press and HOLD power

this worked on iPhone 14 Pro

I’ve had black screen of death intermittently after powering for 6 months and IOS 16.6 didn’t help.

You are a lifesaver.

I’ve tried all of the tricks and my phone is still black

You, my friend, are a life safer

omg you saved my life!! lol about had a mini melt down too

What I’ve done twice now is ask Siri to power down the phone. Then restart it with power button and all is well!

I unplugged my iPhone 14 pro this morning After charging all night and had the black screen of death. Watched a you tube video on quick fix and that solved my problem. Clicked the on button then the off button quickly ( one at a time) then held down the power button on right side of phone for about 40 seconds and my phone turned back on. Hope this helps.

Thanks for the info. But the reset steps did not fix it for me. I had to turn in my brand new phone for repair after less than 6 weeks of use. It's now been 1 week and they say they are waiting for parts to repair the phone. So, in my case at least this seems to be a hardware issue?