call barring settings in N5

[nbsm]

I dont know how to block outgoing calls especially ISD calls in my N5 (updated to 4.4.4)
all information in the net tells only to block incoming calls.
Unfortunately due to oversight i dialled ISD number and it went on for 1 min charging me heavily.
Thnx
NBSM

 

[Aaron Webster]

im not sure that you can block yourself from calling a specific number or set of numbers however apps like TrueCaller can tell you who is really calling