iPhone 16 Pro unexpectedly shutdown, and the screen became unresponsive.

Are you suggesting your phone screen opened when you picked it up or tapped the side power button? If yes, your phone didn't just shut down.

If you open Settings > Display & Brightness > Auto Lock - what is it set to? The screen should auto lock at the time it is set to, unless you have it set to Never. Even if it is set to Never, if you tap the side power button, the screen will lock.

Unless I'm misunderstanding what you experienced, your phone is likely operating as it was set up to operate.

What people are discussing in this thread is the unexpected total shutdown of their iPhone. Meaning it completely shut down and they had to Force Restart (a multi-step process) to get back into their phone.

My iPhone 16 randomly shutdown on its own as well. It's happened to me at least 3 times since I got the phone in Oct 2024. At least twice, I was in the middle of a call.

I don't want to get it exchanged since I can't tell if it's a brand new device or refurbished when the serial number starts with N.

Apple randomizes Serial Numbers. One beginning with N, means nothing and most assuredly doesn't mean it is refurbished. And getting one in October, would be too soon in the lifecycle of the new iPhone 16 Models to have received a refurb.

I literally just woke up and went to shut off my alarm when my phone once again shut itself off. This is the 5th time this has happened to me since buying this phone. Apple next time fix all the bugs before pushing out a new device so fast.

abbigailfriddle wrote:

I literally just woke up and went to shut off my alarm when my phone once again shut itself off. This is the 5th time this has happened to me since buying this phone. Apple next time fix all the bugs before pushing out a new device so fast.

You aren't speaking to anyone from Apple here. This is a user to user only forum, which Apple doesn't actively participate, nor read for user feedback. You can share your thoughts with Apple here --> Feedback - iPhone - Apple

iPhone 16 has now twice shut down while I’m in the middle of watching a video. 85% battery this time. Never had anything like this happen using iPhones - and I’ve only owned iPhones since the original was released.

Apple just ain’t the same these days.

Its the 2nd time im writing this because my phone shut down before i post this. I bought the iPhone 16 Pro Max in November and it’s been shutting off since then and it’s even worse after the iOS 18.2 it keeps shutting shutting down after every hour

I have iPhone 16 pro max I cannot open the phone it just died on me. At 7am this morning I tried to check my mail

it just died I don't know what to do. I tried to switch off can't do it. Nothing happens its just blank screen. I received a phone call this morning and now its locked with blank screen

Mine has shut down twice, unexpectedly. And many times has been in “SOS” mode. No service except making a 911 call when not on WiFi. I have to restart my phone at least once a week. Never had to do this with any other iPhone. Ever.

This happens to my iPhone 16 plus especially when I am using Apple Maps. It will just randomly show a black screen with a little loading symbol in the middle of the screen and nothing will be responsive. It just happened to me while watching a YouTube video and the video glitched and my phone completely shut down.

Same here, I also have i phone 16 pro max and today few minutes ago it suddenly blackout while I’m in facebook. Then it automatically turned on and this is the first time I have experienced this type of issue from apple device.

My iPhone 16 pro max I just bought it before 10 ten day it shut off and on by itself please I need help I bought it with $1200,075.00 it’s very expensive I am afraid if it is not working well what shall I do?

I’ve had the exact same issue. I’ve had the iPhone 16 pro since December and only recently has this become an issue, I don’t know if it’s my storage size but there is still plenty there so it can’t be that. I’ll be using an app on my phone and it’ll suddenly just turn itself off and I have to unlock it again. I’ve tried to reset the phone but it’s not making any difference. If anyone knows how to solve this problem please can I have some help because it’s really worrying me and I don’t have the money to replace the phone.

Same here! I have the iPhone 16 Pro Max and it’s been acting up too. I bought it on April 12th and this month (May) it started to randomly force closes apps and the screen becomes unresponsive. I have to keep shutting it down to make it work again. Super frustrating, especially after spending so much and upgrading from my previous phone (12 Pro Max) that was giving me the same issue. My device is fully updated and I have plenty of storage, so I really don’t get why it’s tweaking like this. Apple needs to address this ASAP