: Provides real-time data on battery health, voltage, and level. *#9900#
Secret codes on Samsung Galaxy A7 provide a quick and easy way to access various features and settings on your device. By following the steps outlined in this article, you can unlock hidden features and advanced settings on your Samsung Galaxy A7. However, be careful when using secret codes, and make sure to backup your important data before making any changes to your phone's settings. With these tips and precautions in mind, you can explore the full potential of your Samsung Galaxy A7 and take your smartphone experience to the next level.
If you need to access , install Samsung Service Mode from the Galaxy Store or use *#0011# followed by tapping Back → Key Input → Q → 0000 (requires specific firmware).
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.