Yes, Samsung Wallet is available in Switzerland and works on compatible Samsung smartphones, including Galaxy S models like this one. Samsung Wallet combines Samsung Pay and Samsung Pass, allowing you to store payment cards, loyalty cards, tickets, vaccination certificates and more, with security provided by the Samsung Knox platform. To use Samsung Wallet, you need a Samsung device with at least Android 9.0, which is the case here. So you can use Samsung Wallet and Samsung Pay in Switzerland with this phone.