What does hidden menu mean

[AC Question]

On boost sharp Aquos in settings under running apps I see a hidden menu app! What is that exactly? And how do I find the hidden menu

 

[belodion]

It probably refers to the Service Menu, which is accessible, normally by technicians and so on, by entering a code on your dialler. The code varies from one device to another, with further variations in different versions of a device.