Free

OTO Free International Call is a powerful system tool is a free application. [Main Functions] ★ Free International Phone Calls – You may place free international phone calls to the United States, Canada, Japan, etc. to 94 countries in Korea. (However, free phone calls are available according to the payment plans of smart phones.) ★ Why OTO Free International Phone Calls? 1. OTO Frree International Phone Call is free because it does not incur cost for any international phone calls placed. 2. You may use international phone calls via the local voice phone bills, so no worries. 3. Unlike other services that offer free service to a limited range of countries, OTO offers free phone calls to all 94 countries. ★ Even if it is not one of the designated countries for free service, you’re in good hands as long as you’re using global OTO app! Install the global OTO app if the country that you would like to call is not listed as one of the countries under free of...