Hello, this is OTO Service Team.

We are pleased to inform you that it is currently difficult to use the OTO Global App.

As the problem of illegal use abroad increased excessively through our app, the load on the server was inevitably restricted.
We would appreciate your understanding that we have restricted our use as a measure to prevent malicious use by illegal users and to prevent harm to good users.

In addition, please kindly understand that recovery may take some time.
After that, we will try to provide better service.

Thank you.

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OTO Global is your ultimate app for communication with friends and family!
Highest quality international calls at the lowest rates, unlimited free calls to OTO users,
purchasing real phone numbers with OTO Number service
and multimedia messenger are just some of many features you can enjoy with OTO Global app.


Key features:

1) OTO international calls
Over 10 million people are already using OTO to make the crystal clear quality international calls at the lowest rates.


2) Free calls to OTO users
Enjoy completely free high quality unlimited calls to OTO users anywhere in the world using your WiFi or data connection.


3) OTO Messenger
OTO messenger lets you send text, voice, photo and video messages, share your location and much more. Enjoy communicating with your friends and family with OTO messenger.


Contact us
Do not hesitate to contact us with any inquiries or suggestions. We are always happy to hear from you.

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Homepage: www.otocall.com
Customer Service Center: +82 2 1600 0546