Since November, when some T-Mobile customers have dialled 911 their phones have been spontaneously making multiple calls, clogging the system, city officials said. His babysitter said that she dialed 911 multiple times without getting an answer. The 911 operators returned each of the babysitter's calls but could not reach her, city officials said. City officials confirmed the babysitter used a T-Mobile device. They said no other cell phone carriers seemed to be affected by the "ghost calls" issue.

Source: CNN March 15, 2017 21:55 UTC