Apple Watch Series 12 and Ultra 4 Owners Report Unexpected Reboots

MacRumors
By Tim HardwickSep 21, 2026, 5:08 am112 ptsTrending
Some new Apple Watch Ultra 4 and Apple Watch Series 12 owners are reporting their devices rebooting unexpectedly, and diagnostic logs suggest the crashes are related to the Apple Neural Engine. Reports have been posted in the MacRumors forums since the new models launched on Friday. Users describe their…

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