Big developing markets adopt most phones, text the most
                                
                                
                                    (Newser) -
                                    Telecom companies must be brushing up on their Hindi. India doubled its cell phone user population in 2006, adding more subscribers than Britain had total, according to a new international communications report. The 150 million Indian phone-toters represent just 14% of the population. China meanwhile sent 429 billion text messages,...