T-Mobile has sent its top engineers to Dallas to fix its 911 glitch in the city, which has caused life threatening problem to the T-Mobile users.

The 911 glitch in T-Mobile handsets started in the last fall, but the company started to take a harder look at the issue after the death of a baby on Saturday night last week. That raised questions, whether 911 delays contributed to the baby’s death.

6-month-old Brandon Alex, died over the weekend after his babysitter was not able to connect 911 emergency services. Because of the glitch in T-Mobile that made “ghost calls” to 911.

"Why my son has to be the example? Why do I have to be the one to stand up and speak for everyone?" said Bridget Alex, Brandon's mom. "This is not what I want to be doing. I want to be at home playing with my son. But at the end of the day, he's gone and nothing can bring him back."

The Denver city officials said that after a T-Mobile caller hangs up, their phone for some mysterious reason keeps calling and overwhelms the 911 service. The issue was only happening with T-Mobile handsets.

The babysitter was using a T-Mobile handset, but the police are investigating, if the baby’s death was directly linked to the issue. A medical examiner will determine the exact cause of death.

Dallas city leader and T-Mobile officials addressed the issue in a Wednesday press conference.

Mayor Mike Rawlings said that the situation was very frustrating and the city manager said that he takes full responsibility for what is going on at the call center.

Dallas T-Mobile users faces 911 glitch

AMandeep