The SIM does need to be in the phone when you perform the actual unlock on your computer. Method 2: Bypassing Xiaomi’s SIM Requirement
Xiaomi is the most restrictive brand regarding SIM cards. If you absolutely cannot use one, try these steps: how to unlock bootloader without sim card
Connect to a PC and use the command: fastboot flashing unlock or fastboot oem unlock . Method 4: Using Mediatek (MTK) Client Tools The SIM does need to be in the
Some older MIUI versions allowed binding over Wi-Fi if you used a VPN set to a specific region (like China or India). how to unlock bootloader without sim card