In the vast majority of cases, a SIM card is not required to unlock a smartphone's bootloader. The bootloader is a piece of software that runs before the operating system (Android) loads. It is tied to the device's hardware and software configuration, not to the cellular carrier network.
The phone will execute the command, wipe all user data, and reboot back into Fastboot mode or standard Android. If it stays in Fastboot, type fastboot reboot to start the phone.
Officially required Official Unlock Method: Mi Unlock Tool (requires SIM card for binding)
Tap on seven times until you see "You are now a developer!". Go to Settings > System > Developer Options . Step 2: Toggle OEM Unlocking and USB Debugging how to unlock bootloader without sim card
You do not need a SIM card to unlock a bootloader. You only need an active internet connection (Wi-Fi) to communicate with the manufacturer's servers to retrieve an unlock code or verify a token. The computer you use for the process acts as the primary interface, not the cellular network.
Execute your fastboot commands or script initializations locally without relying on a computer or mobile carrier authentication. Crucial Risks and Considerations
For devices with Unisoc (formerly Spreadtrum) chipsets, there is a dedicated Python tool called unisoc‑unlock that can lock or unlock the bootloader using its Identifier Token. No SIM card is required for this process. In the vast majority of cases, a SIM
No matter which method you pursue, you’ll need the following:
Most major manufacturers (Samsung, Google Pixel, Xiaomi, OnePlus, Motorola) require an active internet connection and, in many cases, a SIM card inserted to verify carrier status or device ownership. However, it is possible to unlock the bootloader without a SIM card using , OEM unlock exploits , or third-party tools . This report covers safe, documented methods as of 2026.
Before attempting any unlock method, prepare your PC and phone with these essentials: The phone will execute the command, wipe all
For more stubborn devices or those with carrier locks, third-party tools may offer a solution. These tools often bundle multiple functions like FRP bypassing and bootloader unlocking into a single interface.
Unlocking a bootloader without a SIM card depends heavily on your device manufacturer. While many devices like and older Samsungs allow this with just a Wi-Fi connection, others like Xiaomi have strict requirements that typically demand a SIM card for account binding. Manufacturer-Specific Requirements The ability to unlock without a SIM card varies:
On older stock firmware versions, developers discovered that disabling Wi-Fi, clicking "Add account and device" in Developer Options, and immediately turning Wi-Fi back on via the notification shade during the timeout window could occasionally trick the system into registering the account without cellular tracking.