Well for this to matter in a mobile environment you’d have to carry your own WLAN everywhere you go.
no. use something like blokada if you are on android. it works just as effectively
PiHole is no use on mobile data
setup a vpn to your home network
I'm interested in setting up my homelab to monitor and detect rogue traffic that would have caught my phone doing what was described in the article. Does anyone have any open-source suggestions for DIY deep-packet analysis?
I use NextDNS since it also works when I'm not at home.