How To Unlock Bootloader Without Sim — Card !!exclusive!!

Disclaimer: The following guide is provided for educational and informational purposes only. Unlocking a bootloader may void your device’s warranty, compromise its security features (such as Samsung Knox or Google Pay), and can potentially result in data loss or a "bricked" device if not done correctly. The user assumes all responsibility for any actions taken on their device.

Common Errors & Fixes

Method 7: Qualcomm EDL & Test Points (Last Resort)

This is for phones that are carrier-hard locked (Verizon-branded Pixels, AT&T Samsungs, locked Xiaomi). The only way without a SIM is physical.

What are Test Points? Two tiny metal contacts on the phone's motherboard. Shorting them forces the phone into Emergency Download Mode (EDL). how to unlock bootloader without sim card

Process (Highly Advanced):

  1. Remove the phone's back cover and battery (if possible).
  2. Locate the test points (search: "[your phone model] test point EDL").
  3. Short the two points using tweezers while connecting USB to PC.
  4. The phone appears as Qualcomm HS-USB QDLoader 9008.
  5. Use QPST or Xiaomi MiFlash (in EDL mode) to flash an engineering bootloader.
  6. After flashing, the bootloader becomes permanently unlocked.

Risk: This voids warranties, requires micro-soldering skills, and can brick your device. Only attempt if you are ready to lose the phone. Disclaimer: The following guide is provided for educational

Method 5: Realme & Oppo – Deep Testing without Carrier

Realme and Oppo use a "Deep Testing" app to request unlock approval. The app usually checks for a SIM card, but you can bypass this.

SIM-less Bypass:

  1. Download the Deep Testing APK from the Realme/Oppo community website using your PC.
  2. Transfer via USB cable (no SIM needed).
  3. Install the APK – it will initially fail saying "Please insert SIM."
  4. Workaround: Go to Settings > App Management > Deep Testing > Clear Data.
  5. Turn on Airplane Mode.
  6. Open Deep Testing again – the SIM check will be skipped (bug in older versions).
  7. Submit your unlock application – wait for approval (usually hours).
  8. Once approved, reboot to fastboot and run fastboot flashing unlock.

If the bug is patched, you must borrow a SIM from a friend for exactly 2 minutes to register the app, then return it.

Method 2: When OEM Unlocking Is Grayed Out Without SIM

Many phones (e.g., Xiaomi, Realme, recent Samsung models) require SIM insertion and network connection before enabling OEM Unlocking. Common Errors & Fixes

3. OnePlus / Oppo / Realme