Analysts expect AT&T and Verizon, which both have more than twice as many contract subscribers than Sprint, to win the lion's share of iPhone customers. In the fourth quarter, Sprint will activate 1.2 million iPhone customers, compared to 4.5 million at Verizon and 4.3 million at AT&T, estimates UBS AG analyst John Hodulik. In 2012, Mr. Hodulik expects Sprint to activate 5.2 million iPhone users, compared with 14 million for Verizon and 12 million for AT&T