Q: Can I use secret codes to unlock my device? A: No, secret codes are not designed to unlock devices. For unlocking purposes, contact your carrier or use official unlocking methods.
Note: If you press the dial button and receive an "MMI code started" error, the specific code may be restricted by your network carrier (such as Verizon or AT&T). Essential Samsung Galaxy Note8 Secret Codes 1. The Master Hardware Test Menu ( *#0*# ) How to Use Secret Codes on SAMSUNG Galaxy Note8