NEW YORK — T-Mobile USA, the country’s fourth-largest cellphone carrier, on Wednesday said that its CEO has resigned and its chief operating officer is filling in while the company searches for a replacement.
T-Mobile, which is based in Bellevue, is struggling to compete against its largest rivals. Departing CEO Philipp Humm took the reins in November 2010, with a mission to reverse the slow slide of the business without help from the German parent company, Deutsche Telekom AG. But revenue continued to decline every quarter of Humm’s tenure. A deal to have AT&T Inc. buy the company for $39 billion was scuttled by federal regulators.
COO Jim Alling is taking over Humm’s duties in the interim.
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