Update from April 2, 2025:
I was probably shown more than eight children. I would log in and I couldn’t see my children but I could see a kid in California.
Jenna, T-Mobile user, April 2025
As with the SyncUP DRIVE glitch, this SyncUP KIDS error made the location of kids linked with accounts disappear, preventing parents from tracking them.
The bug allowed unauthorised people to not only view the real-time location of other people’s kids but also details such as names and even their pictures.
T-Mobile has since fixed the problem with all SyncUP products.
Yesterday we fully resolved a temporary system issue with our SyncUP products that resulted from a planned technology update. We are in the process of understanding potential impacts to a small number of customers and will reach out to any as needed. We apologize for any inconvenience.
T-Mobile spokesperson, April 2025
The original story follows below:
T-Mobile offers a tracking service called SyncUP DRIVE that tracks your car’s location. A glitch is causing the accompanying app to also show the location of other people’s cars.
SyncUP DRIVE allows users to track the location of their cars in real time and also provides some performance metrics. Some users have complained that the app is also showing the location of cars that are not on their account.
It’s showing me data from all kinds of random cars across the USA. But it won’t show me the data from my vehicles.
Innovator-369, Reddit user, April 2025
I am getting the same. I logged in twice and was getting what looked to be random people’s car data/location.
mgrde, Reddit user, April 2025
In T-Mobile‘s defense, the company notified users last month that it would shut down the legacy app on March 15. It’s possible that the app started acting up after T-Mobile stopped actively supporting it last month.
However, such abrupt withdrawal of support for an app that’s supposed to make people feel safe and secure and give them “peace of mind” in T-Mobile‘s own words doesn’t make sense. Even more appalling is the fact that instead of offering a resolution, the company just asked the person reporting the problem to stop using the app. One person was also told that the problem would sort itself out.
T-Mobile is asking people to switch from the SyncUP DRIVE app to T Life.
Usually, companies give people time to wean themselves off the app instead of disclaiming responsibility.
TrojanGal702, Reddit user, April 2025
Fortunately for SyncUp Drive users, the company hasn’t completely distanced itself from the issue, which has been fixed for many people.
It’s one thing to not be able to upgrade a device due to app requirements, but it’s a security issue if a tracking device lets other people keep tabs on your location. Hopefully, no one took advantage of the situation.
