T-Mobile boasts of its Wi-Fi calling usage in response to AT&T's claims
AT&T Mobile Tel | June 23, 2016
T-Mobile was quick to tout its own success with Wi-Fi calling after AT&T (NYSE: T) noted its customers' uptake of the technology earlier this week.Bill Smith, AT&T's president of technology operations, told attendees at an investors conference Tuesday that the carrier is routing more than 4 million calls a day over Wi-Fi. AT&T began to offer Wi-Fi calling on newer iPhones last fall, and last week it extended the service to Android users for the first time when it launched it on the LG G4.