Use Telbo on your Smartphone to make cheap international calls. Download the Telbo application and start saving The Telbo application works on Android, iOS and Windows and you will still benefit from the standard advantages you are used to as a Telbo use; - good quality calls at the best rates in the market - no SIP blockages - cheap SMS rates So download Telbo and stop sponsoring the Mobile providers! Using our app as a default dialer may interfere with dialing 911 emergency services.