Important: unlocking the bootloader may void warranty, erase all data, and can brick your device if done incorrectly. Back up any data you can before proceeding.
However, there are specific hurdles you might face without a SIM card, primarily related to . how to unlock bootloader without sim card
must verify your identity and device binding through mobile data (Wi-Fi is not permitted for this step). How to unlock Android Bootloader using ADB & Fastboot 12 Jan 2019 — Important: unlocking the bootloader may void warranty, erase
Go to Settings > About Phone > Tap "Build Number" or "MIUI Version" seven times. erase all data
Samsung devices do not require a SIM, but the toggle may be hidden initially on newer models. Connect the device to Wi-Fi .