In Australia, New Zealand and the UK, the country code replaces the first number which is a 0. I assume it would be similar for you. So for example if my number was 0412 345 678, with my country code (+61) it'd be +61412 345 678.
My country code is +381 .When I type +38161xxxxxxx it`s says wrong number format....I don`t know which one is correct that is problem it`s says I need area code too when I try that too again same problem...