The unlocking process completely wipes your device. Back up everything.
(U/U1/W variants) does not have a simple "OEM Unlock" toggle in Developer Options like most Android phones. You cannot unlock it through standard fastboot commands. Instead, we must use a workaround, often referred to as: unlock bootloader samsung s9 snapdragon high quality
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). The unlocking process completely wipes your device
Before attempting any modifications, it is crucial to understand why this is difficult. we must use a workaround