Regarding speeds for data transfer, You can anticipate 4G LTE download speeds of 5-12 Mbps and 2-5 Mbps when uploading. It is possible to expect download speeds of around 350 Mbps and upload speeds of 50 Mbps or more when using a device with 5G connected to the 5G network. The Xfinity Mobile hotspot network includes millions of hotspots for 3G.