My question is simple! How to get maximum (Possible) privacy from ISP in case someone can’t or don’t want to use a vpn ?
Fir example, In some case tor browser is enough for many but they still need from a privacy from isp on other activities on mobile.
Not necessarily true. A VPN also prevents the ISP from collecting data on all of your connections. Currently ISPs (in the US at least) collect and sell what sites you visit even if they can’t see the data due to HTTPS. Additionally, some have implemented, but then removed due to backlash but may implement again some day, MitM attacks on HTTPS connections in order to insert ads. Using a trusted DNS server that they don’t also intercept can help avoid this, though. With a VPN the ISP won’t see any of this, only the connection to the VPN server and have no way to insert themselves as long as they don’t intercept the VPN connection itself before it’s established.