I'm a Norwegian who went to a Swedish music festival last summer. I couldn't pay for a lot of things there, since the booths only accepted Swish (the only relevant Swedish mobile payment solution, it's a de facto monopoly). I couldn't sign up and use Swish on my phone, since it only accepts Swedish bank accounts. I couldn't borrow money from my Swedish friends either, since they didn't have cash (and it mostly wasn't…
> it only accepts Swedish bank accounts I have a Swedish bank account, but I still can't use Swish because I have an American phone. It's infuriating.
The only requirements are that you
1) have a Swedish bank account that supports the service (not all banks do), and
2) have Mobilt BankID on your phone.
If you possess a Swedish bank account and are in the Swedish Population Register, you should be able to get Mobilt BankID on your phone (which is, like Swish, an app available on the App Store everywhere) with your Internet bank and then set up Swish.