iPhone 17 Pro Max - Randomly Rebooting

I'm glad you seem to have it working well now.

I am having this issue on my iPhone 11 after the iOS 26 update. Have seen my phone randomly reboot a couple of times now.

I am having the same issue with my iPhone 17 pro. Had it swapped once and now this is rebooting as well. I’m thinking of getting it swapped again. Or should I wait for any iOS update?

Still no fix with the 26.0.1 update. Just saw my phone reboot again.

And still there with 26.1 - probably a hardware part… I will now ask apple.

deitys wrote:

Received an iPhone 17 Pro Max yesterday in the mail - noticed it was rebooting in my pocket. Took it to the Apple Store and replaced it with the exact same model. New phone is also experiencing the same issue when locked (does not happen when speaking on the phone, playing music, etc). Panic log mentions AppleCentauriAlpha. Issue stops as soon as I turn off Wi-Fi and use cellular data. Set up both devices as new - did not back-up anything.

We have iPhone 17 Pro and 17 Pro Max and are having zero issues. Do you by chance have a VPN installed on your phone?

I had this happen to me after a week of no issues.

To get past the restart loop I plugged my iPhone 17 Pro Max into a 65W power supply (on a hint I found on the internet). I was able to get past the reboot cycle using a 25W brick but it was laggy and would crash if I tried to do too much too quickly, so I thought more power might do the trick and it did.

While plugged in I went through the logs and found 2 issues that stood out to me.

1. There was an error in the Restart Event logs which stated "rst uv_cp_uvlo" which basically means the A19 wasn't getting enough power under load
2. In the JetSam even logs I found a bug code which suggested it was flooding the backboardd.

I turned on the reduced motion setting (Settings > Accessibility > Motion > Reduce Motion) and set my screen to 60fps and the phone hasn't crashed since.

Looking forward to this being patched... 60fps on pro motion screen is sad times.

its worth noting, that I woke up this morning and the phone was completely dead. I have got a refund as there is no stock for direct replacement and I now have to wait until end of october. The phone didn't boot up or respond to their diagnostic tool so I can't say for sure what caused all of this. Back to the old model until stock arrives *Sad iphone 12 noises*

Ive had the 17 Pro Max since the 20th. It’s been doing the random reboot, with WiFi on or off. With all the discussion I’ve seen it seems to be more of a software issue. I’ve just updated my phone to 26.0.1 then 25 min later the phone just randomly restarted it self. I was hoping the update would fix this bug, but I guess it didn’t. Now I miss my 14 Pro Max.

iphone 13, the same issue with iOS 26.1. My phone reboots randomly, even with good charge (>60%), showing less the 10% after. Sometimes it reboots 3-4 repeatedly.

Seems that the issue shows itself when I’m connected to internet (either via WiFi or 3G-4G), having 100% chance to reboot within an hour.

the only way to prevent it - to charge it constantly.

In ios 26.01 it was a little less, but I noticed very fast battery drain. I had to keep batteries with me first time in 5 years.

All foreground processes are switched off, smoothness is switched off too.

I was really happy with the previous iOS, I hoped new iOS 26.1 would fix the problem, but it didn’t.

It's an iOS issue, not a hardware issue. I started having the same problem with my iphone 11 after the update.