Preparations (before you start)
Fortunately, there are several methods to unlock the bootloader without a SIM card. These methods may vary depending on the device manufacturer and model, but we'll cover some of the most common techniques.
: This must be toggled ON . If this is grayed out, your device may be carrier-locked (e.g., by Verizon) or require an internet connection to "phone home" and verify its unlock eligibility.
MediaTek (MTK) and some Qualcomm devices where OEM unlocking is grayed out without a SIM.
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Method 1: Google Pixel, OnePlus, and Motorola (The Easy Way)
| Approach | Description | Best For | | :--- | :--- | :--- | | | A minimal initial setup without Wi-Fi or SIM to keep OEM Unlocking accessible. | Basic Pixel and generic Android devices. | | Using Specialized Unlocking Tools | Third-party software like Haafedk GSM Tool that can bypass FRP or unlock bootloaders. | Broad compatibility; often involves a cost. | | Official Channels (with Proof of Purchase) | Directly contacting the manufacturer's support to request a remote unlock. | Users with broken SIM slots who can prove ownership. |
In Settings > System > Developer Options , toggle on OEM Unlocking and USB Debugging .
On Android:
If your Xiaomi device uses a MediaTek processor (such as the Redmi Note series or various Poco models), you can completely bypass the official Mi Unlock Tool using an open-source exploit tool called . Download and install Python and Git on your PC.