Windows Bluetooth HFP – Enabling Phone Calls from PC via Hands-Free Profile

Microsoft | Windows

Partnered with the Windows Bluetooth team to implement the Bluetooth Hands-Free Profile (HFP) in the HF role, allowing Windows PCs to function as Bluetooth headsets for mobile phones. This work enabled users to make, receive, and control cellular calls directly from their desktop—marking a key first step in Microsoft’s now expansive cross-device strategy. I contributed to low-level API development and system integration to support real-time call controls, audio routing, and device state synchronization. This project laid the technical foundation for what would become a full suite of phone-to-PC continuity features across Windows and mobile platforms.