The main difference between 4G and 5G networks lies in their speed, latency, and capacity. 5G networks provide significantly faster data transmission rates, potentially reaching up to 20 Gbps, compared to 4G's maximum of around 1 Gbps. This speed facilitates improved performance for applications like streaming video in high definition and real-time gaming. Additionally, 5G offers lower latency, often under 10 milliseconds, which enhances responsiveness for applications requiring instant data exchange. The increased capacity of 5G networks allows for more devices to connect seamlessly, supporting the growing number of IoT devices and smart technologies.