1. Introduction: What is a Bootloader? A bootloader is a piece of code that runs on a device before the operating system (Android) starts. It tells the phone which software to load. On Samsung devices, the bootloader is locked by default to protect the device’s integrity and prevent unauthorized modifications.
On Android 11+ (One UI 3+), after unlocking, you must connect to the internet for 7 days (168 hours) before the “OEM Unlocking” toggle becomes usable again. This is Samsung’s anti-theft measure.
No. The unlock command always triggers a factory reset for security reasons.