Huawei X3 mobile phones support 5G networks and need to be adjusted in the phone Settings. Go to your phone's Settings, find the \"Mobile Network\" option, then select \"Preferred Network Type,\" where select \"5G\/4G\/3G\/2G Automatic.\"
If there is no 5G coverage in the current area, the phone will automatically connect to 4G or other networks. If you need to use 5G network, you need to use the area with 5G coverage.
In addition, it is necessary to confirm that the 5G function is enabled on the phone, and the option of \"Enable 5G network\" can be found in the \"Settings - Wireless and network - Network Settings - Mobile network\".