Unlocking a device bootloader lets you install custom recoveries, ROMs, or root access. The exact steps vary by manufacturer and model, but the general process below covers methods that work when you don’t have a SIM card.
Important: unlocking the bootloader may void warranty, erase all data, and can brick your device if done incorrectly. Back up any data you can before proceeding. how to unlock bootloader without sim card
MediaTek-powered phones (Tecno, Infinix, Doogee, some Xiaomi Redmi Notes) have a hidden engineering backdoor called MTK Metamode. You don't need a SIM, a PC account, or permission. Do NOT use undocumented or “force” commands found
Requirements:
Steps:
No SIM card is ever involved because BROM mode runs before the Android OS loads. Unlocking a device bootloader lets you install custom
| Brand | SIM Requirement | Workaround |
|-------|----------------|-------------|
| Google Pixel | No SIM needed | Works directly via fastboot flashing unlock |
| OnePlus (old) | No SIM needed | Use fastboot oem unlock |
| Xiaomi | Yes (Mi Account + SIM) | Need SIM + account binding for official method; some unofficial tools exist |
| Samsung | Yes (carrier unlock first) | SIM required for OEM unlock toggle; use paid remote service |
| Motorola | No SIM needed | fastboot oem unlock after getting unlock code from website |