I asked Google? I think more specific setting instructions would help you, but its capable
Yes, the Mudita Kompakt supports Wi-Fi calling [1, 2, 3]. Despite being a minimalist “dumb phone” designed to reduce screen time, Mudita built modern network features into its custom, de-Googled operating system (MuditaOS K).
Essential Connectivity Features
- Wi-Fi Calling & VoLTE: It includes native support for making calls over both Wi-Fi networks and 4G LTE networks. [1, 2]
- Regional Optimizations: The phone is sold in distinct versions (such as the North American version) to ensure its network features line up correctly with local carriers like T-Mobile or AT&T. [1, 2]
- The Offline+ Physical Switch: The phone features a slider on the side that physically disconnects Wi-Fi, Bluetooth, cellular data, and the microphone for complete privacy. You must ensure this switch is turned off if you want to use Wi-Fi calling. [1, 2, 3, 4, 5]