App Detail » OTO Free International Call

What's New

2.4.4

- Supported iOS 10
- Bug Fixed

Again, we really hope this update makes OTO even better.

Reviews of any nature are always appreciated.

Please email us at [email protected] with any other questions, or feedback!

Thanks, OTO Family.

App Description

A free international call service with no international call charges

※ Ranking First in International Phone Call Division of 2014 App Award Korea ※
※ 2015 Master Consumer Confidence of Korea Brand Awards ※


Did you know that the 2002 legendary figure of World Cup, Coach Gus Hidink, used OTO?!

OTO Free International Phone Calls app is used by more than 5 million people.


[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 charge service areas.
You can use international phone call service for around 250 countries worldwide of the highest quality for the lowest price imaginable.
OTO Global App offers voice all service to 45 countriies worldwide, and as long as your data is connencted, you may call any country anywhere in the world.

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 : +82-2-16000546

App Changes

• October 01, 2011 New version 1.4.0
• February 11, 2012 New version 1.5.0
• March 09, 2012 New version 1.5.1
• April 07, 2012 New version 1.5.2
• April 17, 2012 New version 1.5.3
• February 18, 2013 New version 2.0.0
• February 21, 2013 New version 2.0.1
• March 09, 2013 New version 2.0.2
• April 05, 2013 New version 2.0.3
• May 16, 2013 New version 2.0.4
• June 18, 2013 New version 2.1.0
• June 24, 2013 New version 2.1.1
• October 05, 2013 New version 2.1.3
• October 08, 2013 New version 2.1.4
• October 21, 2013 New version 2.1.5
• November 23, 2013 New version 2.1.6
• December 14, 2013 New version 2.1.7
• December 19, 2013 New version 2.1.8
• July 28, 2014 New version 2.1.9
• September 05, 2014 New version 2.2.0
• September 07, 2015 New version 2.3.0
• September 09, 2015 New version 2.3.1
• October 04, 2015 New version 2.3.2
• October 18, 2015 New version 2.3.3
• November 01, 2015 New version 2.3.4
• December 12, 2015 New version 2.3.5
• January 09, 2016 New version 2.3.6
• January 18, 2016 New version 2.3.7
• March 01, 2016 New version 2.3.8
• June 30, 2016 New version 2.4.2
• November 07, 2016 New version 2.4.4