How to Lock the Bootloader on a Samsung Galaxy A32 5G

Preparing Your Samsung Galaxy A32 5G

• 📶 Ensure your device is connected to Wi-Fi before proceeding with the bootloader locking process.
• ⚙️ Navigate to Settings > About phone > Software information and tap the Build number seven times to enable Developer Options.
• ⚠️ In Developer Options, you should see OEM unlocking enabled and grayed out, indicating an unlocked bootloader.

Locking the Bootloader

• 🔌 Power off your phone. Prepare a USB cable connected to a computer (the computer itself is not used, only the cable connection to the phone).
• ⬆️⬇️ While holding Volume Up and Volume Down buttons, plug the USB cable into your phone to enter a blue screen mode.
• ⬆️⬇️ If the screen turns off, release the buttons. If it doesn't, press and hold the Power button as well.
• 🔒 On the next screen, confirm the action to lock the bootloader by pressing the Volume Up button. Warning: This action will erase all data on your phone.
• ☁️ It is highly recommended to delete your Google account from the phone before starting to avoid complications during setup.

Post-Locking Setup and Security

• 🔄 After the phone restarts and data is wiped, complete the initial setup. For a quicker setup, you can skip Wi-Fi connection initially.
• ⚙️ Once the setup is complete, reconnect to Wi-Fi, go back to About phone > Software information, tap Build number seven times, and access Developer Options again.
• 🚫 Find OEM unlocking within Developer Options and disable it to restore device protection features like FRP.
• 🔒 Restart the phone one last time. Disabling OEM unlocking is crucial for features like FRP, ensuring your phone is secure if lost or stolen.