*#0011# – One of the most powerful codes. Shows live LTE/Wi-Fi signal strength (RSRP, RSRQ, SINR), band number, and network type. Ideal for troubleshooting poor reception.
*#9900# – Used for advanced debugging. Here you can take system logs, run dumpstate, or clear the system logcat. Not for casual use. 5. Reset & Wipe Codes (High Risk) *#27663368378# – Factory Data Reset (Jig Mode) Launches an older Samsung service menu that includes a “Rooted Phone” reset option. This can wipe user data without confirmation. Do not use unless you want to erase everything. How to Use Secret Codes on SAMSUNG Galaxy Note8
The SAMSUNG Galaxy Note8, released in 2017, remains a beloved phablet for its massive display, powerful S Pen, and robust build quality. But beneath its sleek glass and metal exterior lies a hidden world of diagnostic tools, service menus, and engineering screens. These are accessed via "secret codes" — USSD codes and proprietary dialer inputs that can test hardware, pull up device statistics, and even reset specific components. *#0011# – One of the most powerful codes
Have a code we missed? Share it with the community — but always test at your own risk. *#9900# – Used for advanced debugging