AT&T, T-Mobile, and Verizon all reported that their customers traveling overseas were having connectivity problems due to issues with a third-party network partner, Syniverse6. The issue affected international roaming connections for the carriers' customers, leaving some American subscribers unable to make calls, send messages, and use data while overseas6.
Syniverse reported facing intermittent connectivity issues, which affected its ability to support international roaming for multiple major U.S. telecom providers, including AT&T, T-Mobile, and Verizon. The company was working with its network partners to resolve the problem6.
Syniverse is working closely with its network partners to restore full service and resolve the intermittent connectivity issues affecting international roaming for some U.S. mobile users. The company understands the inconvenience caused and appreciates the patience of those impacted as they navigate this challenge.