09/22/2017 (Fri) 18:41:20
Don't you guys really understand that with dumb flip-phone you have absolutely no privacy when doing calls and texting with other people. You should treat cellular network as another way of connecting to the Internet without wires. Yes, all hot-spots are controlled by one entity and can triangulate you, it's bad. Yes, the firmware is proprietary. But you can utilize the possibilities and connect to SIP bridge through VPN. Your carrier knows where you are and that you are using a VPN. Fine, lot's of people are using VPNs today, especially corporate employees. You don't make calls, most people use message apps today it's fine too, nothing suspicious. Your SIP provider sees you connecting through VPN, nothing interesting here.
You still can communicate privately with other people on IRC, via mail and messaging apps, lot's of free software choices here, you can call others with SIP and not be fingerprinted/profiled by your carrier. When you don't want to be connected and therefore tracked, you turn off the modem and done.