On iPhone 12, 13, and 14 models running iOS 16.1, the bypass only works for Wi-Fi functionality. Cellular service (calls, 4G/5G data) remains locked. Unlock Hub admits this in their changelog.
The workflow generally shown involves putting a locked device into Device Firmware Update (DFU) mode and loading a local file labeled as the "Unlock Hub custom IPSW" to strip out the existing Activation Lock configuration. The Core Technical Catch: Unsigned IPSWs Unlock Hub Ios 16.1 Download
Follow this verified path to find the :