So yesterday, it turned out that my phone was updated (I had it set to automatic updates). It seemed like a fairly major update, as it took half an hour of setting up afterwards to complete (it said it was "optimizing apps" one-by-one, and there were nearly 45 apps)! It was a bit annoying as it was doing this, and I missed several calls, because I didn't realize it was doing this in the background. They all went to the voicemail. Anyways, that's not my question. My question is, it looks like this feature requires a kernel modification. When I looked at the kernel version afterwards, it said it was running Android 6.0.1, which was the same version it was running before. So not sure why all the hubbub for keeping the exact same version of the kernel as before?