When you find that your Android device—specifically a Sony Xperia—lists in the service menu, it generally indicates a hardware or carrier-level restriction that prevents standard unlocking procedures.

In many instances, the bootloader lock is tied directly to the SIM lock.

Restart the device and check the service menu again. In some cases, the status immediately flips to . 2. SIM Unlocking the Device

The bootloader is the first piece of software that runs when you turn on your phone, responsible for loading the operating system. Sony devices include a specific "Rooting Status" in their service menu to indicate if this can be bypassed.

: Open the phone dialer and enter *#*#7378423#*#* . Navigate to Service info > Configuration > Rooting Status .