Did someone resolved this problem replacing the battery? I have another issue. The Note 4 with Touchwiz restartes suddently. But with Google Now its shuts off sometime while in my pocket, not while using. I can play, do what ever i wannt and then when its blocked, this happen. Then i doesnt turn on. Took the battery out, in, power button...nothing. For a while, then 20 minutos after, back from the grave. Im in a loop since then.
My feeling:
I have a hardware problem. And im in a 80% that the battery is not involved.