Samsung secret codes are essentially "hidden" dialer shortcuts that allow users to access diagnostic menus, system information, and hardware tests not available through the standard settings menu. On older models like the Samsung Galaxy A7 (2016) Go to product viewer dialog for this item.
In most cases, the hidden menu will launch automatically once the final # is entered. If it does not, press the button to trigger the command. Essential Codes for Galaxy A7 (2016) Functionality how+to+use+secret+codes+on+samsung+galaxy+a7+2+work
Type the code exactly as shown, including the asterisks ( * ) and hash symbols ( # ). how+to+use+secret+codes+on+samsung+galaxy+a7+2+work