After 5G network is commercialized, the 4G phones will still function normally. The 5G phones allows for interoperability with 4G/3G/2G network. Therefore, 5G phones work with 4G network, as same as 4G phones work with 3G network .
After 5G network is commercialized, the 4G phones will still function normally. The 5G phones allows for interoperability with 4G/3G/2G network. Therefore, 5G phones work with 4G network, as same as 4G phones work with 3G network .