In its attempts to quickly build up its 3G voice and data network, AT&T is knowingly reducing the signal strength of its existing 2G network used by the first-generation iPhone, Motorola's BlackBerry and RAZR and other handsets, according to a Friday Open for Business report. AT&T is said to have shifted some of its transmitters from the 850MHz 2G band to the 1,900MHz band in certain areas. AT&T s
