ZebraTC75X Android 7 add DNS mobile network ?


Hell all,
best wish to all :)

We used many device TC75X under android 7 actually.
These devices are used on wifi and mobile network (APN private).

We find, how to add DNS on wifi easily and all works fine...
But for mobile network, i can't find any setting ...

Someone can tell me how to add DNS on mobile network ?
Thanks for all and again best wish guys