DeviceBoxWhere to find the panic-full log on an iPhone
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When an iPhone restarts by itself, iOS writes down what happened just before: a panic log. It is the most useful clue you have, and it is already on the phone.
Open the analytics logs
- Open Settings › Privacy & Security.
- Scroll to the end and tap Analytics & Improvements.
- Scroll to the end and tap View Analytics Logs (Analytics Data on earlier iOS).
The list holds many files written by iOS and by apps, sorted by name, oldest first. On iOS 27 it shows a few of them with Show All, and has a search field at the bottom.
Find the panic-full file
Look for files whose name starts with panic-full, followed by a date and time, for example panic-full-2026-10-13-123912.ips. iOS leaves one each time the iPhone restarts by itself. Open the one with the latest date: it describes the most recent restart. If the list has a search field, type panic-full in it to see only these files; the newest is at the end.
No panic-full file in the list means iOS has not recorded a panic since its logs were last cleared. A restart you started yourself, or one caused by an update, leaves none.
Open it in DeviceBox
- Share it: open the file, tap Share, then choose DeviceBox. DeviceBox opens Panic analyzer on it. If DeviceBox is not in the row, swipe to the end, tap More, and add it.
- Paste it: select the text of the log, copy it, and tap Paste in Panic analyzer.
- From Files or AirDrop: a
.ipsfile saved in Files or sent from another device opens in DeviceBox too.
DeviceBox reads the log on your iPhone and tells you in plain words what failed, which part is most likely behind it on that model, and how sure that is. Your logs never leave your iPhone.
Only have a code?
A repair shop or a forum may give you only a fragment, such as 0x200000 or a sensor name. Type it in Only have a code? on Panic analyzer to see what it means on each model.