How+to+use+secret+codes+on+samsung+galaxy+a7+2+work -

. These codes, often called MMI or USSD codes, allow you to test hardware, check firmware, or troubleshoot system issues. How to Enter Secret Codes

Runs specific diagnostic tests for GPS location tracking.

This is the most famous and useful Samsung secret code. It opens a master control panel for testing nearly every physical component of your phone.

*#0011# – : Provides live diagnostic telemetry for your network environment. It reveals real-time signal strength (RSRP/RSRQ), active band numbers (e.g., LTE Band 3, Band 20), and cell tower identification numbers. how+to+use+secret+codes+on+samsung+galaxy+a7+2+work

These codes are specific to Samsung's One UI and provide deep access to hardware and firmware details: Secret Code Hardware Test Menu Check IMEI Number Battery Status & Health Firmware Version Info System Dump (Speed Boost) USB Configuration Advanced WiFi Info The "General Test Mode" (Master Code:

of specific codes in more detail if you're worried about harming your device.

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. This is the most famous and useful Samsung secret code

If you type a code and nothing happens, here are the most likely reasons and solutions:

*#0*# – : This is the single most valuable command for any Samsung device. It brings up an interactive grid to verify core modules:

Provides detailed information about your current cellular network connection, including serving cell info. or 2018 models)

on the Samsung Galaxy A7 work by triggering hidden menus directly within the phone’s core firmware. You can use these Unstructured Supplementary Service Data (USSD) strings to diagnose hardware malfunctions, check battery health, and verify network connectivity. To use them, simply open the default Samsung Phone app, dial the code on the keypad, and let it execute automatically without pressing the green call button.

(including 2016, 2017, or 2018 models), open the app and enter the code directly into the dialer keypad . Most codes will execute automatically as soon as the last character is typed, while some may require you to press the Call button. Essential Samsung Galaxy A7 Secret Codes

To use secret codes on the Samsung Galaxy A7 , you typically enter specific alphanumeric sequences into the phone's default Phone/Dialer app

without knowing their function can disrupt your phone's connectivity or performance. factory reset using physical buttons if the screen is unresponsive? Samsung Codes List: All Secret & Diagnostic Codes (2026)