T-Mobile US launched Live Translation, a real-time AI feature built directly into its wireless network. The service translates phone conversations across more than 50 languages.
Duolingo (DUOL) shares fell more than 10% following the announcement. The stock hit a new 52-week low as investors weighed the competitive threat.
The feature works on any device connected to the network without a separate app. T-Mobile shares saw a modest increase after the launch.