Hi,
Secure Settings is spotty at best on Android6.0 MM which made me dig more into the run shell commands I could use. And since I hate exploring the topic more than once, I made topic with over 40 commands in shell, and some explanations on how to look for settings etc.
I hope I save you trouble off big amount of googling I went through to find what I found!
Happy tasking.
(good grace it has been a while since I have ben to the google groups.... google should work on it a little bit! :D)