@Anonymous User The code is possibly in connection to the battery. CCalibrationand or " Another useful hidden menu is for checking the battery voltage. Enter *#0228# in to the phone dialer and you'll see the change in voltage when you charge it "
@MaurizioAnnoni it's possible the codes won't work on every phone due to the region the phone was released in or due to current software permissions.
A phone supplied directly from a network fkr example has it's own flavour of software on it and different csc so may react differently.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "