Yes, Siri and other voice assistants work with CR8 earbud(s). If you have already connected your CR8 earbud(s) to your iPhone, you just need to activate Siri by long pressing on the 'Home' button or speaking voice commands to your phone, depending on your Siri response settings. You can also activate voice command input by double clicking on your paired CR8 earbud. When Siri is activated, you will then hear 2 ‘dings’ or tones in the earbud indicating that the speaker and MIC functions have transferred via Bluetooth to the earbud(s).