The Mobile Companies New Revolutionising How We Make Calls

We all can see arround us that using apps to make internet calls has been available for a while, but the caller and receiver often have to have the app installed and a data signal is needed for it to work, so that one can make call for free, although via using internet infact.
But a company called onoff is changing this. It uses the GSM network as well as data to connect to the handset, allowing SMS text messaging, producing a wider coverage and only one person, even if it is the receiver, needs the app.
Customers can also be issued with multiple numbers and adopt a number that is local to the country they are in. This will help consumers to make calls without  installing any apps in their smartphones.
Meanwhile, a company called FreedomPop is offering a free Sim card with free calls and data. lets see in future how long will take to get this revolutionising idea for making calls without using apps.
It may reduce the markete of other apps like whatsapp, imo and skype as well (to some extent)  many companies are trying there best to make their customers comfortable with features but after the existing revolutions of above mentioned internet based apps customers opted to use internet calls instead of mobile network.

Now it will be a good opportunity for customers after these offers of mobile companies  to make free calls.