So it sounds like you phone is just defective I would return it and get a new one instead of trying to fix it your self.
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Can also confirm camera is fixed on latest build :)
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---------- Post added at 10:02 AM ---------- Previous post was at 09:56 AM ----------
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Are you trying it with a third party or stock camera,stock works fine its third party cameras that reboot the phone.
Edit: I'm running regular gapps on top of stock cm 11
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