I tried Graphene OS but my banking failed so back to stock Android
Any features in the mobile app that don’t exist on the website? I’ve had good luck checking my bank balance and all sorts of other things through Firefox on Android - pre-edit: I missed that it was app only. That sucks.
For browsing on Android I use Mull and on my android Proton VPN is always on. I visit twitter and twitter ocasionly but always through mull browser.
The VPN really doesn’t do much at all for privacy. It just moves the point of trust from the service provider for the current network to the VPN provider, plus now you have extra hurdles as you’ll show up as a VPN IP rather than a “normal” residential or cellular IP. Realistically set your DNS to be something like Quad9 or Cloudflare and you’ll already be several steps ahead on browsing privacy
For spending habniys I try to use Google pay as little as possible and use my master card.
Realistically any card is going to be selling your spending habits. Cash and crypto are about the only ways to have private purchases, and plenty of places won’t accept either
Personally I had a long hard think about my privacy practices and how they only isolated me and made me unhappy, and realized that if I’m already blocking all ads so I never get to see the results of the incredibly dystopian advertising hellscape, does it really matter that much if Google knows I spent $200 on random model train shit last month when they already know I watch a few hours of train-related content on Youtube? So I take smaller steps to not fully given in, but I don’t take steps that create extra hassle in participating in modern society and living my life to its fullest.