Is there a charge for calling me abroad or at home? What is the general charging standard?

If so, well, some fees have been charged abroad. It should be said that there should be no charge, but some international meals have to be played there by foreigners, and there are also countries that have wifi in all aspects when calling. Video chat when you have wifi, and foreigners make phone calls. Many people, many times, still want mobile phones. This is a good method.