Jabra Evolve 40 is designed to also be compatible with smartphones and tables via the jack-plug that connects to the USB-controller. As the number of smartphones and tablets with USB-C are increasing, Evolve 40 USB-C users might also want to connect the headset to their personal devices. In most cases this should work seamlessly, but for some certain mobile phones / tablets there might be a compromise in the performance of audio and remote call control functionality (e.g. answering / ending call / muting, etc.). For this reason, and to set the right expectations for our users – we have added a note about this in the Evolve 40 Quick Start Guide as well as on the packaging itself – using the sticker depicted on the right.