Disclaimer: The author is not responsible for any software damage or voided warranty resulting from misuse of secret codes. Use at your own risk.
*#0808# Action: Opens USB settings (not a test per se but allows you to switch between MTP, ADB, and charging modes). Warning: Do not change these settings unless you know exactly what you are doing—you could disable file transfer. how+to+use+secret+codes+on+samsung+galaxy+a7+2+work
| Secret Code 📲 | What It Does ⚙️ | Category 🏷️ | | :--- | :--- | :--- | | *#06# | Displays your device's unique IMEI (International Mobile Equipment Identity) and Serial Number. This is the most universal code and works on any phone. | Device & System Information | | *#1234# | Shows your phone's current software version information (AP, CP, CSC, Modem). | Device & System Information | | *#12580*369# | Provides a detailed summary of software, hardware info, and the phone's manufacturing date. | Device & System Information | | *#2222# | Displays the hardware revision version of your device. | Device & System Information | | *#0*# | The ultimate hardware test menu. It allows you to check the screen, vibration, sensors, speakers, cameras, and more all in one place. | Hardware Diagnostics | | *#7353# | A quick test menu specifically for the earpiece, vibration, loud speaker, camera, and sensors. | Hardware Diagnostics | | *#0011# | Opens the Service Mode, which gives you detailed information about your network connection and cell tower info. | Network Information | | *#0228# | Opens the battery status menu, where you can see the current voltage, temperature, and overall battery health. It also includes a "quick battery test" option. | Battery & Power | | *#34971539# | Brings up a menu with detailed information about your phone's camera, including its firmware version. | Camera Info | | *#0808# | Allows you to change the USB settings of your device (e.g., MTP, ADB, Mass Storage) to control how it's recognized when plugged into a computer. | System & Connectivity | | *#0283# | Launches an audio loopback test to check the functionality of your device's microphone and speaker. | System & Connectivity | | *#9900# | Opens the SysDump mode, which is used to clear system logs and run various system diagnostics. Be cautious in this menu as it has system-level functions. | System & Connectivity | Disclaimer: The author is not responsible for any
Enter the code (starting with * and ending with # or # and a final symbol). Warning: Do not change these settings unless you
These codes (also known as USSD codes or MMI codes) allow you to test hardware components, retrieve hidden network information, run instant diagnostics, and perform master resets. However, many users report that "codes don't work" on their Galaxy A7. Why? Because Android manufacturers and carriers frequently block certain codes for security reasons.
are combinations of digits and symbols, usually starting with * or # and ending with # . Open the Phone app (dialer) on your Samsung Galaxy A7 Type the code exactly as it appears (e.g., *#0*# ).