Here’s a practical, safe list of common Samsung codes that generally work on the Galaxy A03 Core (Android Go edition). — some can reset settings or wipe data. ✅ Safe & Useful Codes (A03 Core) | Code | Function | |------|----------| | *#0*# | Hardware test menu (screen, touch, sensors, cameras, vibration, etc.) | | *#06# | Displays IMEI number (both IMEI1 and IMEI2 if dual SIM) | | *#1234# | Shows current firmware version (PDA, CSC, modem) | | *#12580*369# | Software & hardware info (RF cal date, etc.) | | *#0228# | Battery status graph (health, voltage, temperature) — does not reset fuel gauge on this model | | *#0808# | USB settings (MTP, ADB, RNDIS, etc.) | | *#9090# | Service mode for diagnostic logging | | *#0011# | Service mode with real-time network/battery info | ⚠️ Codes That Can Reset or Wipe Data | Code | Effect | |------|--------| | *#*#7780#*#* | Factory reset (removes Google account & app data, keeps media) | | *2767*3855# | Full factory reset (reinstalls firmware — use only if you know the risk) |

I notice you're asking about "secret codes" for the (often referred to as A03 C). These are typically USSD codes or service codes used to access hidden menus, test hardware, or view device info.