No, 4G phones do not support a 5G network. 5G is a new technology that requires specific hardware and software to operate. While some 4G phones may be marketed as "5G-ready" or "5G-capable," this typically means that they have certain features that can support some aspects of a 5G network, such as increased data speeds or improved latency, but they are not fully compatible with a 5G network. To use a 5G network, you need a 5G-enabled device that has the necessary hardware, software, and network capabilities to access the 5G network.