Does anyone know what 5G signal actually refers to?

5G is developed by the "3rd Generation Partnership Project" (3GPP). 3GPP is a standardization body. Its current members include relevant industry bodies in China, Europe, Japan, South Korea and North America. If you are currently using a 4G package, as long as your 5G mobile phone is set up correctly, you can also access the 5G network within the 5G network coverage. If you use a 5G package, you can enjoy faster 5G network services.