Problems with this device

Operation of this device is quite fanciful, it sometimes indicates the speed limit of a road which is 100 meters from that or you drive. Its actuation sometimes take more than 5 minutes. The after sales service is inefficient. Inforad went bankrupt most recently was taken over by another company that has made once a major update that has improved this device. Another big problem, I bought 90 166 and is currently at 99.