If you own a Samsung Galaxy A7 (2nd generation)—often referred to as the or the SM-A750F/DS—you are holding a device packed with hidden potential. Beneath the sleek One UI interface lies a powerful diagnostic toolset accessible only through "secret codes."
The Samsung Galaxy A7 is a powerful and feature-rich smartphone that offers a wide range of functionalities to its users. However, there are some hidden features and advanced settings that can be accessed using secret codes. These codes, also known as dialer codes or USSD codes, provide a quick and easy way to access various settings and features on your Samsung Galaxy A7. In this article, we will guide you on how to use secret codes on Samsung Galaxy A7 and explore the various features and settings that can be accessed using these codes.
: Clear out the entire text field, close the Phone app completely from your recent apps view, reopen it, and type the code cleanly from scratch. 3. Update or Revert Firmware Modding
Instantly displays your device’s unique IMEI and Serial Number. *#0228#
Provides detailed information about your current cellular network connection, including serving cell info. how+to+use+secret+codes+on+samsung+galaxy+a7+2+work
unlock hidden diagnostic menus, hardware tests, and configuration panels by typing specific character strings into the stock phone dialer. These Unstructured Supplementary Service Data (USSD) and Manufacturer MMI codes act as backdoors for developers and technicians to troubleshoot hardware problems, check battery health, and verify network connectivity without navigating the standard settings application. 1. Enter the Secret Codes Properly To execute secret codes successfully on a Samsung Galaxy A7 Go to product viewer dialog for this item.
Provides real-time data from the accelerometer, proximity sensor, and barometer. Troubleshooting: What if they don't work?
Next, Maya entered #0 # out of curiosity. The phone jumped to a diagnostic menu with tiles for testing the screen, camera, sensors, and touch input. She tapped each one: the red, green, blue screen tests confirmed there was no dead pixel; the touch test showed smooth response across the display. Satisfied, she exited by pressing Back.
To and get them to work, open your device's stock Phone app , navigate to the dialer, type the specific character sequence (e.g., *#0*# ), and the system will automatically launch the hidden menu without needing you to press the call button. If the codes fail to prompt a response, you must navigate to Settings > Security and Privacy and disable the Auto Blocker feature, which natively blocks execution strings to protect the device. If you own a Samsung Galaxy A7 (2nd
: Tests physical button clicks (Volume keys and Power button) by changing the screen color upon pressing. 2. The Device Identity Verification: *#06#
These codes are verified to work across most Galaxy A7 models, including the A710 (2016) A720 (2017) A750 (2018) Secret Code Hardware Test Recommended.
This button can sometimes reset the battery gauge if it is miscalibrated, though it should be used sparingly as it can temporarily cause erratic percentage readings. 📱 Device Information
Occasionally, newer Android versions (like One UI) relocate or disable older legacy codes. These codes, also known as dialer codes or
Turns the screen completely into that color to check for dead pixels or screen burn-in. Receiver: Emits a sharp tone to test the earpiece speaker. Vibration: Tests the internal vibration motor.
Thinking about battery life, she explored *#0228# which showed battery status and voltage. It wasn’t a replacement for a proper battery health app, but it gave her quick voltage info. For a deeper look at network connections, she used *#0011# to view service mode details — helpful when troubleshooting flaky mobile data.
If a secret code doesn't work on your Galaxy A7, there's usually a straightforward explanation and a simple fix.