Secret codes are special sequences (like *#0*# ) you type into your phone's dialer. This is why you must use Samsung's pre-installed Phone app; third-party dialers might not recognize them.
Opens advanced firmware settings where you can force-refresh the Wi-Fi and Touch Screen Panel (TSP) firmware. *#9900#
How to Use Secret Codes on Samsung Galaxy A7 Go to product viewer dialog for this item. Secret codes on the Samsung Galaxy A7 Go to product viewer dialog for this item.
Samsung regularly hardens its security posture via monthly Android Security Patches. In newer versions of One UI, specific diagnostic screens (such as the general test menu *#0*# ) are blocked when the device detects certain security applications or strict enterprise policies (MDM) active on the device. 3. Hidden Menu is Disabled how+to+use+secret+codes+on+samsung+galaxy+a7+2+work
Below is a comprehensive guide on how to safely find, enter, and use these codes on your Samsung Galaxy A7. How to Enter Secret Codes on Samsung Galaxy A7
These codes allow you to test your screen, cameras, sensors, and battery.
This is the most critical code for troubleshooting. It opens a full-screen grid of interactive tiles. You can test LCD screen colors (Red, Green, Blue), receiver sound, vibration, dimming capabilities, cameras, and sensor accuracy. Secret codes are special sequences (like *#0*# )
Using these integrated MMI (Man-Machine Interface) and USSD protocols allows you to bypass user-interface limitations. You can directly evaluate your mobile hardware, debug fluctuating network bands, or verify factory specifications. This comprehensive guide provides step-by-step optimization instructions, a verified diagnostic code library, and precise troubleshooting steps for every generation of the Samsung Galaxy A7.
Shows precise battery voltage, health capacity, and network block details. Diagnostic Configuration
To use secret codes on your (including the 2018 model), you simply need to open the Phone app , navigate to the Keypad , and dial the specific sequence of symbols and numbers. Most codes will trigger a hidden menu or display information immediately after the last character is entered. Common Secret Codes for Samsung Galaxy A7 *#0*# *#9900# How to Use Secret Codes on Samsung
*#26833662# – : Deep engineer settings allowing manual modifications to 2G, 3G, and LTE baseband bands.
Displays Global Certification Forum status.
Ensure you haven't missed a * or # at the beginning or end.
Displays your current firmware version (PDA, CSC, MODEM). This is essential for verifying if your device is running the latest software or a custom ROM.