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Accesses the firmware menu for Wi-Fi and the touch screen panel ( TSP ). You can use this to refresh Wi-Fi versions or update touch firmware.

Maya loved tinkering with her old Samsung Galaxy A7 (2016). One rainy afternoon she sat at her kitchen table, determined to learn a little more about the phone’s hidden features. She wasn’t after anything risky — just practical checks and quick shortcuts to make life easier. how+to+use+secret+codes+on+samsung+galaxy+a7+2+work

*#0*# Action: Launches the LCD Test Menu . What you can do: Test your screen colors (red, green, blue), touch sensitivity, vibration, backlight, camera, and sensors (gyroscope, proximity). Exit: Press the back key or the "Exit" button on screen. Note: This is arguably the most useful code for the Galaxy A7. No call button needed—it opens instantly. Accesses the firmware menu for Wi-Fi and the

For the Samsung Galaxy A7 (2018 model specifically), *#0*# is the most useful — it lets you test the screen, vibration, and sensors without rooting. One rainy afternoon she sat at her kitchen