us computer company at & t experienced a virtually 10 percent drop in quarterly overall performance on january but beaten expectations on a hefty increase in global quality and improved performance by apple ' s iphone . net profit slipped 9 . 7 kilometers in the first division comparing with the same quarter last season to 3 . 12 billion us credits while revenue fell 0 . 6 percent to 30 . 6 global us dollars , the industry said in a statement . earnings per share of 53 dollars were lesser than the 48 cents in share expected by wall street analysts .
iPhone is a product of AT&T's.