Having apps like this would normally be a good thing for competition. And Viber reached 200 million users in May.

Meanwhile, WhatsApp, an ad-free cross-platform mobile messaging app, has over 300 million active users, and 325 million photos shared each day. Line is a smartphone app that allows users to make free calls and messages to one another, both nationally and internationally, regardless of which mobile network provider they are using. Users can make free voice calls on iOS, Windows Phone, and Android over 3G, 4G and Wi-Fi. The service only launched in June 2011, so it took only two years to get to the 200 million mark, making it one of the fastest growing companies in tech history. The app is growing remarkably fast, having reached100 million users in January and 150 million users in April. The company that Vietnam is most likely worried about is Line, the Asian mobile messaging platform that recently reached 200 million users. That is a big potential customer base, and the network providers will not be giving it up without a fight. It has 17 million smart phone users, and 60 million citizens under 30 years old.

Right now, Vietnam is a country with big potential growth. 'We will lose 40-50 percent of our revenue if all of our 40 million customers use Viber instead of traditional call and text,' a representative of Viettel Telecom, one of the country's biggest phone network providers, is quoted as saying.

What that means is so far unclear, but a ban certainly would not be out of the question. The speculation comes after Vietnamese Prime Minister Nguyen Tan Dung said late last week that the government will be soon be deciding a new policy in how to manage these tools. Vietnam may wind up banning free messaging services, such as WhatsApp, Line and Viber, as a result of the harm they do to the country's network providers, according to a report from Reuters on Tuesday. In Vietnam, though, there a ban may be put into place for an entirely different reason: competition. We've seen plenty of countries around the world try to censor Internet properties, most recently Turkey, which cracked down on Twitter following protests in the country. Speculation that country will implement a ban after Prime Minister declares new policy

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