Google on Tuesday unveiled a new smartphone and home hub that squarely aim at products from market leaders Apple and Amazon. The company's new branded smartphone, called "Pixel," marks a departure from past efforts. Up to now, Google's Nexus phones were made by a variety of manufacturers that sold them under their brands. "Google is trying to position itself as a complete supplier rather than simply offering Nexus-branded handsets that were rebatched by another company," said Jeff Orr, senior practice director for mobile devices at ABI Research.