O2: Heavy iPhone data use
The iPhone is generating "unheard-of levels of mobile Internet usage," according to Vivek Dev, COO of Telefónica O2 Europe, the sole carrier of the device in the United Kingdom. Web browsing and e-mail are two of the primary purposes of the iPhone, and O2 customers have unlimited use under current plans. Traffic is said to be so high in fact that it is straining O2's network, and this is only expected to become worse as the company switches to flat data fees. Voice and SMS plans were recently upgraded.