In Nigeria, South Africa and Indonesia, more than 90 percent of 18- to 27-year-olds use mobile phones as their primary means to access the Internet, even though smartphones aren't widely used, according to a survey by Norwegian browser company Opera Software. The survey was displayed to Opera Mini browser users on their handsets and Opera collected 300,000 responses. The results challenge the long-standing belief that smartphone uptake will be the major driv ...