Definitely not a stupid question! Networking infrastructure is complex. I’ve been working in IT for years and still find myself scratching my head at times going, “Wait, how does the OSI model work again?”
Connecting to a VPN on your phone while using mobile data basically means the cell phone tower handling your data only sees encrypted data. Whoever your VPN provider is will see your traffic instead of the cell tower.
However, in modern times it’s fair to be wary of backdoors and exploits that can compromise your device and render the VPN encryption moot. There’s not much that regular people can really do to mitigate that possibility other than not use a phone.
If you’re interested in learning more networking fundamentals, I’d recommend starting with the OSI model and its layers.
A handy mnemonic I whipped up with ChatGPT last year for better remembering the order of the layers:
Precise Data Navigation Takes Some Planning Ahead
I migrated from Plex to Jellyfin maybe a year and a half ago and haven’t looked back. Great user experience and works so well out of the box IMO. Good Android app, too. Works with Chromecast, too (though I’ve been trying to ditch Chromecast in favor of just a laptop connected to the TV via HDMI).
I started digitizing old home movies that were on VHS and created a “Home Movies” library for my family; none of us had watched them in ages since none of us have a VCR anymore, lol. Great mother’s/father’s day gift for one’s parent if you’ve got the time and equipment. It’s nice having the whole family able to easily stream our home movies.
A few of my favorites that I follow:
Open Culture - https://toot.community/@openculture
George Takei - https://universeodon.com/@georgetakei
Endless Screaming - https://botsin.space/@scream
The New Oil - https://mastodon.thenewoil.org/@thenewoil
Space Telescope Science Institute - https://astrodon.social/@spacetelescope
Linux on Mobile - https://fosstodon.org/@linmob
https://www.youtube.com/watch?v=fkNqNYkwhlg