(Reuters) -AT&T surpassed Wall Street expectations for first-quarter wireless subscriber additions and free cash flow on Wednesday as more people purchased its higher-tier unlimited plans. The telecom giant has been leaning on its 5G rollouts and plans that are usually cheaper than rivals such as Verizon to appeal to more budget-conscious consumers and drive growth in the competitive U.S. market. AT&T added 349,000 net monthly bill-paying wireless phone subscribers in the first quarter, flying... Read this story at Yahoo , Yahoo Finance