The DC-Unlocker client features a terminal window at the bottom of the interface where you can manually enter AT commands

dc-unlocker-cli --help

Activate Voice: Enables voice calling features on modems that support it but have it disabled by default.

2. IMEI Repair & Change Commands (Advanced)

Warning: Changing IMEI may be illegal in some jurisdictions. Use only on legally owned devices.

These functions represent the core utility of DC-Unlocker, allowing for network freedom and band optimization.

: This is the "key" to the castle. It unlocks the modem's protected data so you can make permanent changes.

AT^HSDPA=1: Enables High-Speed Downlink Packet Access (HSDPA) for faster data. How to Use These Commands in DC-Unlocker