OTO Free International Call

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About this app

OTO Free International Call app provides free international calls and it doesn't charge any international call fee, while it uses your additional/video call minutes given monthly by your carrier company.

[Main Functions]

★ Free International Phone Calls
- You may place free international phone calls to the United States, Canada, Japan, etc. to most of the countries in Korea. (However, free phone calls are available according to the payment plans of smartphones.)

★ Why OTO Free International Phone Calls?
1. OTO Free International Phone Call is free because it does not incur costs 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 most of all countries.


If you encounter any inconveniences using our service, please do let us know. We are always all ears for your valuable opinions.
- website : www.otocall.com
- call center : [phone]

Ratings and reviews

It is good as a free overseas phone application but sometimes It seems to be the quality of the call is bad and my voice is automatically changed. I can hear the counselor's voice change from time to time. It sounds like scared. It's a greatest free app, I'm sorry i couldn't give 5 star.. it sounds rude but it's true due to the quality of the phone.

I've been using this for a few years for calls from South Korea to the U.S. It works great for that, but doesn't work the other direction. Calls will drop occasionally but I just call back. Most of the time works fine with no cost to me or the person I called. Does not work for calling toll-free numbers in the US.

I used this app in the past to call a landline number in the US from Korea. Now when I try to call a US number from Korea, it says the country I selected (USA) is not available. Then what's the point of this app? Edit: The response below seemed to not actually read my complaint