The iPhone has fueled smartphone sales by Apple's latest U.S. carrier partner, Deutsche Telekom-owned T-Mobile USA. In the three-month period ended in August, the service provider saw its share of domestic smartphone sales jump to 13.2 percent, up 1 percent.
According to a report released Monday, the carrier began in April attracting owners of feature phones upgrading to smartphones. Now, however, 56 percent of consumers buying an iPhone from T-Mobile are coming from another smartphone. Indeed, more than 38 percent of T-Mobile's smartphone purchasers previously owned Android handsets...