Exclamation [Q] How to manual change band in i9195?

Hi

I have the "GT-I9195XXUBML1 deodexed" rom. In my previous device (n7000) I has the Netmonitor app and I could change the band by "Field Test" > "Debug Screen" menu.
On S4 mini i haven't the "Field Test" Menu (Debug Screen) and the code *#*#4636#*#* is not working..
How I can open the Debug Screen in i9195? Did I must paste any app to /system/app/ ? Or What?