Brett Feldman spotlights AT&T (T) 4Q results, calling them a “strong finish to a strong year.” Sustained growth in core customer categories drove results, allowing them to meet full-year goals. It was their best year “in a decade” for internet subscriber growth, which he attributes to continued company investment in fiber and cutting-edge tech. Brett notes that customers who bundle options are the happiest, stay longer, and spend more. He sees plenty of growth in fiber ahead.