Turn the phone on. It should prompt: "SIM Network Unlock PIN."
: For many modern Samsung devices like the J2 Core, carriers use a Device Unlock App samsung j2 core unlock code
Use Volume keys to highlight "Wipe data/factory reset" and press Power to select. Confirm: Select "Yes" to confirm the wipe. Reboot: Select "Reboot system now." Turn the phone on
[Current Date] Subject: Mobile Device Unlocking Device: Samsung Galaxy J2 Core (SM-J260F, SM-J260G, SM-J260M) samsung j2 core unlock code