We have been using this device for two years (2019). So far I have had to replace it once when it stopped working. We are having problems again with the device just stopping and IT is telling me that that can happen when it is in a bad area, but this bad area lasted 24 hours and again 7-8 hours while in transit from Florida to New Orleans. Clearly, something is wrong. I asked if we could switch out the unit as I suspect it is going bad and was told yes but they wanted $80 to insure I sent the old one back. I was taken back considering we have been with them paying all this time with no problems and they did not ask this of us the first time. I am done and looking for another service provider. For $80 I can try someone else out.