Hello
I use Prepaid roaming SIM card to roam on Korea.
And use Skype call forwarding to make local people call me
but, the problem is. CallerID always changes when I receive the call

Korea uses 0##-####-#### format
but to me, I receive in three formats, changed ramdomly
sometimes I get
0##-####-####(local format)
or sometimes
001 82 ##-####-#### (Int'l prefix + country code + number)
or sometimes
001 ##-####-#### (Int'l prefix + number)

I just want to unify all numbers to
+82 ##-####-####

what should I do?

I tried Local number format and CallerID fix on cydia but none worked!
And damn Korean carriers blocks the IMEIs of foreign phones so I cannot use local SIMs.