How To Use Secret Codes On Samsung Galaxy: A15

*#0 # * – Opens the General Test Mode (Hardware Diagnostic Menu).

Let’s run through a practical example using the most popular code: *#0*# . How to Use Secret Codes on SAMSUNG Galaxy A15

Using these codes is incredibly simple. You do not need to download any third-party apps. *#0 # * – Opens the General Test

This is arguably the most important code for any Samsung user. It launches the , a hidden dashboard designed for engineers and technicians to test hardware. You do not need to download any third-party apps

Open the Phone app (the green dialer icon).

While most codes are harmless read-only tests, some can factory reset or wipe your device.

| Code | Function | | :--- | :--- | | *#34971539# | – Shows camera sensor type (e.g., ISOCELL HM6) and allows firmware check. Do NOT press "Update" unless you have an offline firmware file. | | *#0588# | Proximity Sensor Test – Wave your hand over the top of the phone to see if the sensor turns the screen off (for calls). | | *#2663# | TSP / Touch Screen Firmware Update – Displays the touchscreen controller version. Use only if your touch is lagging. |