SERVICE MODE (and Band Selection) for SM-G920F, how to??? topic

I have an International SM-G920F but I can't open SERVICE MODE like I did with S4, Note 4, S5...
(dial *#0011*, menu->back, menu->insert key, type Q0000 and press enter)

And other codes found online don't work.

Does anyone know how to open SERVICE MODE ?
I need it for BAND SELECTION and other stuff...

Thank you for Help