Regardless of the method you use, you must prepare your computer and Android device with specific software tools. Ensure you have the following ready:
In some cases, a factory reset while connected to Wi-Fi, skipping SIM setup again, can activate the option.
Use a PC with Platform Tools to run the command: fastboot flashing unlock . how to unlock bootloader without sim card
Carrier-branded OnePlus phones are often blocked from unlocking, requiring a signed token from the carrier. However, for specific models like the OnePlus Nord N10 5G T-Mobile, a proven method exists that bypasses this entirely. This technique involves manipulating a flag in the on the device. This forces the Android Boot Loader (ABL) to write a generic, non-carrier Software Project ID into the device's RPMB partition. On the next reboot, the bootloader sees this generic ID, bypasses the carrier check, and allows the fastboot oem unlock command to succeed—all without a SIM or unlock token.
Unlocking a bootloader without a SIM card depends heavily on your device manufacturer. While most brands like , OnePlus , and Motorola do not require a SIM card, Xiaomi typically enforces its use for account binding. Method 1: Standard Android (Google, OnePlus, Nothing) Regardless of the method you use, you must
Run the command line interface for MTK Client and execute the unlock bootloader command.
Run the command to wipe user data (required before unlocking): python mtk e metadata,userdata Use code with caution. This forces the Android Boot Loader (ABL) to
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Connect to a PC and use the command: fastboot flashing unlock or fastboot oem unlock . Method 4: Using Mediatek (MTK) Client Tools