What is 5G?
5G is the fifth generation of mobile communications. Its goals include greater data capacity, low latency for different applications and support for many connected devices. The speed a user experiences cannot be determined simply from a 5G icon on a phone.
What affects network capacity?
A mobile network includes the device's radio connection, base stations, transport links and a core network. Frequency, coverage, distance and the number of simultaneous users affect performance. Higher frequencies can provide substantial capacity but have different propagation and obstruction characteristics. Lower frequencies can cover wider areas. Deployment architecture and backhaul capacity also matter. Maximum speeds stated under laboratory conditions or as standards targets are not speeds that every user will receive continuously. Latency assessment must consider the entire path to the application server, not just the radio link between phone and base station.
Uses and realistic expectations
Beyond mobile video and file transfer, 5G can support industrial connectivity, dense device populations and certain low-latency applications. Successful applications also depend on coverage, reliability, device compatibility and software design. A 5G phone should not be assumed to support every feature in every country or on every operator; frequency bands and services must match. Wi-Fi and 5G are different technologies, although devices can use both under different conditions. A newer connection does not automatically eliminate battery consumption, data allowances or server bottlenecks. Practical speed and stability should be measured where the service is used and with the relevant application.