FYI, there’s an experimental build available, if you can’t wait.

https://grapheneos.org/releases#stallion

Apparently Grapheneos’s implementation of Play integrity is better, as it relies on the real (sandboxed) play services, rather than MicroG.

The whole app, or just tap 2 pay?

Might be Calyx.

Mobilepay, Nordea Mobilbank, Eboks and Rejsekort etc work fine on Grapheneos.

The only app (I’m aware of) that doesn’t work is the Mitid app (I use the physical code device).

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Buy an Android TV box (can be a cheap one), and install SmartTube: https://github.com/yuliskov/SmartTube

Adblock and sponsorblock.

I just bought a refurbished (as new) Pixel 9 to use Grapheneos.

Saved ~50% and didn’t pay Google.