AT&T has talked with Google about joining its mobile-phone software alliance. The phone company is “analyzing the situation” and may use Google’s software for phones, Ralph de la Vega, chief executive officer of the wireless unit, said in an interview Friday. He refused to give details of discussions and said he hasn’t personally met with Mountain View-based Google. The search-engine giant announced Nov. 5 that it would work with 33 companies to develop software for mobile phones. Wireless carriers Sprint Nextel and T-Mobile USA joined the alliance, looking for features such as local shopping searches that could help them lure new customers.