a710f cant unlock network:::::::

hi

sir i have a710f (a7 2016) that net lock

in version 3.0.8 says :

Quote:

SM-A710F
(Flashing,Read/Write EFS,Full Service)


first:
what do you mean about full service

two:
when i do direct unlock it

Quote:

"decrypt data fail"


can u sir help me