Notification settings reset after reboot I just bought a new smartphone and the new Android (6.0.1) has this peeking thing that really annoys me. I wanted to disable it, for example for WhatsApp, so I went to 

Settings -&gt; Sound &amp; notification -&gt; App notifications -&gt; Whatsapp -&gt; Allow peeking (off)

This solves the issue. The problem is that when I turn the device off and then turn it on again, these settings go back to default and the peeking is re-enabled without my doing anything.

Is there a way to permanently disable peeking?

EDIT:

I've found this link and option 1 seemed very promising. However, I did that and it didn't work either. Still looking for the solution, though.
Well, I finally got it to work. I'm going to post the solution just in case someone is having the same problem. I did exactly as it is stated here: just toggling another one of the other two options in the notification settings did the magic.