note3 n900a 3g not working

note n900a nc2 baseband . I flashed the phone by 4 files . write qcn n900a and cert but 2g is working fine 3g is not working I searched alot but there is solution for n900v and n900t but no solution for n900a . there is no network mode in settings more network tab . I also tried with code *#*#4636#*#* I selected all modes and tried but no success . please tell me some good solution .