Avoid Internet downtime and lost productivity by adding a Ubiquiti U-LTE to your existing UniFi Network. U-LTE uses the AT&T LTE network to provide backup Internet connectivity to ensure your UniFi WAN Network is always running. Each defined network can be configured for ability to use LTE failover when it is necessary. Coverage and availability depends on the AT&T LTE network. Speed is dependent on AT&T Network Coverage.