My model was not purchased from Digitec, but otherwise the same model.
Credit Suisse banking app works for me. Twint also works as far as I could test it. The same with Swissquote app.
I have not tested other banking apps.

What hasn't worked so far is Netflix (the latest version) and Google Play. Other than that, I haven't come across any apps that haven't worked, but it should be noted that I don't use very many apps.

Unfortunately, many bank apps need the so-called "SafetyNet", which is "supplied" by the Google Play Store; I had to notice with attempts on LineageOS: if you want to use such apps, you can't get around stock roms (because of the closed bootloader, no root etc.)... BUT you can ask the bank; maybe - with the right amount of people - this will have an effect...