My note 4 is now doing this as well. I don't know how to fix it. it runs the optimizations and I have seen it go up to 165 out of a total of 250 and always freezes and screen goes black.
My Samsung Galaxy Note 4 is doing the same thing. Stuck in reboot after the new software update I installed yesterday. I can't even get pass the Samsung startup screen. Sometimes It won't turn on. The two times I was able to get out of constant reboot I got a "andriod is optimizing" screen and...
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