iPhone 18 Pro Max unexpectedly restarts with rst wdog in ResetCounter logs
I bought a new iPhone 18 Pro Max directly from Apple. It is running iOS 27.0.
On September 19, 2026, the iPhone restarted by itself twice. In both cases, the screen first went black, then the Apple logo appeared, and the phone started normally.
The times were:
- 10:10 AM
- 7:28 PM
I found two ResetCounter analytics logs. Both show:
- Reset count: 1
- Boot failure count: 0
- rst wdog
- reset_in_1
The first log also shows reset_in_1 timeout and dblclick_timeout. There are no panic-full logs so far.
Could this be an iOS 27 software issue, or does it suggest a hardware problem? Should I monitor it for a few days or contact Apple for diagnostics?