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MacRumors · September 21, 2026 — 11:08

Apple Watch Series 12 and Ultra 4 Owners Report Unexpected Reboots

Apple Watch Series 12 and Ultra 4 Owners Report Unexpected Reboots
Image: MacRumors

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 watches suddenly displaying the Apple logo and restarting while they were…

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