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New Apple security feature reboots iPhones after 3 days, researchers confirm

(techcrunch.com)
286 points joegibbs | 2 comments | 15 Nov 24 01:55 UTC | HN request time: 0.001s | source
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SoftTalker ◴[15 Nov 24 02:32 UTC] No.42143463[source]▶
If this is true, then it's a trivial enhancement to make that a configurable setting. 72 hours could be the default, if your security needs are higher, you could turn that down to 12 hours, or even less.
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chatmasta ◴[15 Nov 24 03:22 UTC] No.42143699[source]▶
If this were configurable, I would make it 30 minutes and increase it if I noticed any inconvenience. But I doubt that I would. I already have my phone in permanent do-not-disturb (so a reboot causing delayed notifications wouldn't be an issue), and it's not like I mind entering my passcode instead of FaceID every 30 minutes.
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duskwuff ◴[15 Nov 24 03:43 UTC] No.42143792[source]▶
30 minutes would be excessive. Keep in mind that the phone is unusable while it's rebooting, and that rebooting uses a nontrivial amount of power.
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chatmasta ◴[15 Nov 24 04:01 UTC] No.42143853[source]▶
Rebooting takes ~7 seconds and ideally only happens when I attempt to use it.

But regardless of that.... why does it take a nontrivial amount of power?

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klausa ◴[15 Nov 24 04:56 UTC] No.42144072[source]▶
Because booting is relatively CPU-intensive, compared to being at idle.

But iPhones do not boot in 7 seconds either — it's closer to 40. At least that's what it took on my 16 Pro Max right now when I tested it.

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1. fnueiwfg923 ◴[15 Nov 24 07:14 UTC] No.42144586[source]▶
My iphone 15 just rebooted in 12 seconds.
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2. oarsinsync ◴[15 Nov 24 07:53 UTC] No.42144764[source]▶
Rebooted or turned on?

I had to create a shortcut to actually trigger a reboot, as I couldn’t find a reboot option in settings. My iPhone 13 mini on iOS 17.7.1 took 29 seconds.