My Note4 started locking up and crashing after the last OS update a week or so ago (to 6.0.1). I ended up having to do a factory reset twice. The first time I tried to restore from Google's backup and had the same problems.
I also installed aLogrec and found that the problems seemed less frequent. Unfortunately i never managed to get at the logs before the reset. After the last reinstall I just kept aLogrec running and had no problem for about 2 days. Today I turned off aLogrec and had 2 lock ups within several hours.
The lockup are so severe that I need to remove the battery. Holding down the power button for over a minute does not help.
What would explain this behaviour?