SEOUL/SAN FRANCISCO : Samsung Electronics on Wednesday unveiled its newest flagship smartphone, powered by Qualcomm's chips and Google's artificial-intelligence model, hoping its upgraded AI features can reinvigorate sales and fend off Apple and Chinese rivals. Samsung was faster than Apple in launching an AI-powered smartphone but failed to regain its crown in the global smartphone market last year, squeezed by stiff competition with the U.S. rival in the premium market and with Chinese firms