sync up tracker goes offline

I just bought a bundle of 3 this past weekend, installed them and was very happy with my testing...initially. 1 day later I used the app to share the device statuses with my wife. All was well again... 1 day later all 3 device configurations have disappeared from my phone. I called tech support and they said they were not aware of any issues. They obviously have not read these comment chains. It's a great idea but I guess either the hardware or software is lousy. I'm bummed but it won't keep me from returning the devices.

Thanks everyone for describing your experiences here. It's been very helpful. 

Atentamente

Is this problem still going on for others? I bought one last week and it turned itself off after about three days with 25% of battery power still there (according to the app).

An application update occurred on or about March 3, 2023. A few days later, the SyncUp device began going offline each day. No matter how long the device was in motion and no matter how many miles the SyncUp device traveled, the device would never go online again without performing a number of steps including, deleting and reinstalling the application, deleting the device from the app, and cycling the power on the device multiple times. Identical problems occurred over the previous few days with a refurbished replacement SyncUp device sent to me by T-Mobile under a warranty replacement.

I spoke with an advanced technical support representative from T-Mobile about the issue. The tech rep said that at least some of the SyncUp devices failed to receive and/or properly load the update information associated with the early March application update. According to T-Mobile, another application update is currently in the works that will hopefully fix the issue.

I've had SyncUp for a couple of years now and in the past it has infrequently gone offline maybe once every one to two months requiring a power cycle.  For the month of March, 2023, it has been awful and seems to go offline on a daily basis, while fully charged and in a coverage area.  Even when it's offline and the tracker moves into a strong coverage area, it stays offline until someone physically cycles power on it.  I'm not sure if it's a problem with a recent firmware/mobile-app upgrade or if there's a hardware issue with the device.  Either way, it's rendering this device useless and I'm close to cancelling the service.  How wide spread is this issue?  How many others are seeing the same behavior?  Thanks...

That's why I got rid of mine a few months ago.