as soon as the final symbol is entered. If it doesn’t, press the Essential Code Reference Table Function/Description Diagnostics General Test Mode : Tests LCD, touch, vibration, cameras, and speakers. Identification IMEI and Serial Number (crucial for tracking or warranty). Shows detailed Battery Status , voltage, and capacity health. Displays current Firmware Version (AP, CP, CSC) and Model Name. System Info *#12580*369# Hardware & Software info, including the manufacturing date. Service Mode : Checks network connection details and serving cell info. Optimization System Dump : Allows deleting log files to clear system junk. Advanced menu to update TSP/WIFI firmware or refresh Wi-Fi. Troubleshooting: If Codes Don't Work Codes for SAMSUNG Galaxy M31 - HardReset.info
Now you can troubleshoot or explore your Galaxy M31 like a pro – directly from the dialer. How to Use Secret Codes on SAMSUNG Galaxy M31
If your battery percentage is stuck (e.g., always 50%), tap "Quick Start" – this recalibrates the fuel gauge. Do not tap "Battery Reset" unless you know what you're doing. as soon as the final symbol is entered