This brief video and presentation introduces the concept of Mobile Initiated Connection Only (MICO). This mode is designed for IoT devices that send small amounts of data. MICO mode has to be negotiated between the device and AMF in 5GC. A device in MICO mode cannot be paged as it would not listen to paging to conserve battery power. This extreme power saving mode can ensure that the battery can last for very long time, ideally years thereby making this vision of billions of connected IoT devices a reality.