The Mudita Kompakt has two ways to shut off communication. Offline+ provides extra security compared to airplane mode.
What is the difference?
Airplane mode disables wireless communications like cellular networks, Wi-Fi, and Bluetooth at the software level.
Offline+ mode goes further by physically cutting off power to the GSM module and disabling all three microphones at the hardware level - including the top mic, bottom mic, and headphone jack mic. This makes the device incapable of connecting to cellular networks or capturing audio. Offline+ mode also disables the camera, Wi-Fi, and Bluetooth at the software level. This comprehensive shutdown ensures your device is completely offline, providing maximum privacy.