Hi there Cagnik!
I hope you're enjoying your global travels! I know how important it is to stay connected while you're abroad and I will be delighted to review all available options.
Please use our International Trip Planner found here: http://vz.to/13PtksT You choose the countries you're visiting, the services you need (calls/text/data) and your model phone. The 3rd tab will be titled "Dialing Instructions" and will advise you how to dial depending on the country you're in.
If you're still having issues you can contact our Global Customer Service for free by using the Calling Card information found on the right hand side of this page: http://vz.to/17msSW8
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