: Always backup your data before attempting any modification, as the bootloader unlock process is designed to erase everything for security.
Download the Android SDK Platform-tools or use a minimal ADB and Fastboot tool. unlock bootloader samsung s9 snapdragon high quality
If you have a Snapdragon model sold outside the US/Canada (such as certain Chinese or Latin American variants), you may have the built-in "OEM Unlocking" option. : Always backup your data before attempting any
: Unlike Exynos variants (international models), Snapdragon models in North America lack the "OEM Unlocking" toggle in Developer Options. If it ends in 1 , 2 , or 3 , you can proceed
Open Phone Info SAM on your phone. Look at the . If it ends in 1 , 2 , or 3 , you can proceed. If it is 4 or higher, stop immediately – no unlock exists for Bits 4+.
On (Snapdragon 845, sold in Hong Kong, Brazil, China, etc.), Samsung allows bootloader unlocking via Developer Options. On SM-G960U/U1/W (US/Canada), the option is hidden and non-functional.