The best part about downgrading is that you can retain your old smartphone to be used in airplane mode, then you can turn on wifi as you need it. in this manner you control backdoor users... it is like that ad: "Alexa I am leaving home" implying: "Alexa, feel free to use the computing power of all my devices and Internet of Things possessions for whatever nefarious purposes that you care to..."
The best part about downgrading is that you can retain your old smartphone to be used in airplane mode, then you can turn on wifi as you need it. in this manner you control backdoor users... it is like that ad: "Alexa I am leaving home" implying: "Alexa, feel free to use the computing power of all my devices and Internet of Things possessions for whatever nefarious purposes that you care to..."
that's assuming airplane mode does what we think it does. Don't things like amber alerts and EAS come through even when in airplane mode?
I never get them on a phone that I use in wifi mode but does not have a simcard installed..