No google, samsung, or apple services in the background or separate carrier operating system. Plus the audio is always worse on the old phones. Unless law enforcement is out to get ya, the only thing being tracked is what time and number called you, or whom you called and at what time.
I use a virtual card for the metro system, and in some places, you can reload your card with cash. I don’t think you even need to use your real name when getting a metro system pass
Where’s GOG.com?