*#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.
*#2663# – (Touch Screen Panel) – Forces a refresh of the digitizer firmware. Can sometimes fix minor ghost touches. How to Use Secret Codes on SAMSUNG Galaxy Note8
*#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. *#0011# – One of the most powerful codes