Can you elaborate more? What menu are you talking about? Did you get a message? If so, can you do a screenshot?What is this?
Codes through the keypad?It is a hidden menu that you can access by putting in codes. It shows a multitude of things like imei number, call forwarding status, and had tweaks and checks for other things like colours, time, camera and many more. If you enter the wrong one you can instantly wipe your phone, so tread with care! Search for the codes for your device and explore