My phone randomly rebooted by itself about 10 mins ago while idle on my desk w/ aod lock screen.. 
My 13 Pro Max has acted the buggiest it has ever been so far on iOS 17, especially in the past few weeks. I'm waking up every morning noticing the phone has rebooted at least once (I see the Shortcut notifications "2 automations are enabled...."), Appears it happened at 2:09am Sun. morning...does it throughout the day randomly...I have yet to catch it in the act.For those whose device “rebooted”;
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From the apple community on Reddit: iPhone appear to turn off for a while overnight? You’re not alone
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My 13 Pro Max has been doing this. It reminds me of my old iMac, I would put it to sleep overnight and it would randomly reboot at times (with a message that it restarted "because of a problem" - info mentioning a "kernel panic").I'm on a 14 regular 17.0.3 and mine didn't reboot either night either. I'm still wondering what caused it
My 13 Pro Max has been doing this. It reminds me of my old iMac, I would put it to sleep overnight and it would randomly reboot at times (with a message that it restarted "because of a problem" - info mentioning a "kernel panic").
Updating that computer to High Sierra OS seemed to fix the issue. So these random iphone reboots...I HOPE a fix comes in the next update.
"If your Mac restarts unexpectedly, an error known as a kernel panic occurred, and a message indicates that your computer restarted because of a problem. The most likely cause is faulty software. "
Wonderful. smh.Reading on Reddit folks on 17.1 beta are also seeing the battery / reboot issue.
Same here for my iPhone 12 Pro and iPad 11 pro (2018)! Running both on 17.0.317.0.3 on a 13 Mini. Have had no random reboots. Been on 17 since beta 6.
I’ve had 17 on my iPad Pro (M1 11”) since the first Beta, it’s currently on 17.0.3 as well and it has not experienced any random reboots either.
No reboots for me either, but I don’t have trouble waking it.I’m on 17.0.3 with an iPhone 15 Pro and haven’t had any unexpected reboots. I have had several times where my phone won’t wake up unless I let it sit for a minute. I thought about doing a fresh install but I’d rather have the slow to wake issue rather than the reboots.