Digitz.com, a provider of online prepaid calling cards, has announced new international calling rates on all of its products to many different countries, including Belgium Cellular, India, South Korea, Ukraine, Romania, and Mexico. The products offering the new rates include Digitz Black Calling Cards, Digitz Plus Calling Cards and Digitz Max Calling Cards.

Several free features are offered by prepaid calling cards from Digitz, including PIN-less dialing, Speed Dial and auto recharge. Solid call quality is made possible as traditional fiber optic is used to terminate all Digitz calls. Customers can take advantage of the international calling plan from Digitz, providing savings of 50%-60% from international calls charged from cellular phone carriers, according to a release.

Founded in 2004, Digitz currently serves millions of customers in U.S. who make calls internationally. Every month, Digitz terminates millions of calls to all over the world.

In related news, TMCnet recently discussed Vopium’s WiFi service. Vopium (News - Alert), a provider of global communications, enables users to save up to 94 percent when making international calls or sending SMS from mobile phones. With Vopium WiFi (News - Alert) (News - Alert), customers can make 100 percent free calls and avoid roaming charges when abroad.

The Vopium service, an application that users install on their mobile or smartphones, is offered to over 900 mobile phone models including iPhone, Android (News - Alert) (News - Alert), BlackBerry, Symbian (News - Alert), Windows Mobile and Java platforms. Downloading and installing the service takes less than a minute.

Vopium recently announced a partnership with Sonomio, a Danish mobile service provider, to provide international calling directly from Danish users’ mobile phones.