Can I use my CA next bank TWINT app with a foreign (non-Swiss) mobile number? Yes, absolutely! CA next bank is one of the few Swiss banks to allow its clients with foreign phone numbers to use TWINT.

As of 2026, you generally cannot use TWINT with a US phone number. TWINT is a Swiss-specific payment system that requires a mobile number from Switzerland (+41) or a few neighboring European countries, including Germany (+49), Liechtenstein (+423), Austria (+43), Italy (+39), and France (+33). The app is designed for residents of these regions, and even the "Prepaid" version of the app requires identity verification that is typically linked to a Swiss bank account or a local residence. While you might be able to download the app with a US Apple ID or Google Play Store account, the mandatory SMS verification and residency requirements make it inaccessible for those with only a US (+1) mobile number. For your 2026 trip to Switzerland, peer-to-peer advice suggests sticking to contactless credit cards or services like Apple Pay and Google Pay, which are accepted nearly everywhere TWINT is used.