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With this typical smart home or commercial IoT network architecture, having the same radio in a mobile device and end device isn't really practical or necessary. We've gotten a bit used to this idea with technologies like bluetooth connected to speakers and headsets, but those are one-to-one, personal, temporary and on demand network connections. The devices and infrastructure of the IoT typically require stable, always-on, internet connected, many-to-one architectures that don't fit (or benefit from) that model.
If your application calls for device-to-mobile interactions, talk to us. There are a number of approaches to this that take into account cost, reliability, and flexibility for the future, and we'd love to help you figure out which approach meets your business needs.