: Navigate to Settings > Developer Options and find the OEM Unlocking toggle. If it's missing, connect to Wi-Fi and wait up to 7 days for it to appear. Boot into Device Unlock Mode : Power off your phone.

. No toggle for "OEM unlocking" will appear, and there is no official way to unlock them. Step 1: Preparation & Backup Unlocking the bootloader will wipe all data and permanently trip Samsung Knox

For almost all Samsung S9 Snapdragon users, the bootloader is unlockable by consumer means. If you absolutely need an unlocked bootloader, your only reliable option is to buy an Exynos S9 (SM-G960F).

Tap seven times until it says "Developer mode has been turned on". Toggle OEM Unlocking : Go to Settings > Developer Options . Find and enable OEM Unlocking and USB Debugging . Enter Device Unlock Mode : Power off the device.

How to Unlock the Bootloader on Samsung Galaxy S9 (Snapdragon)

: The security fuse (Knox 0x1) is permanently blown.