cannot
No, this mobile phone does not support 5G standard and cannot use 5G network. To use 5G network, the mobile phone needs to support 5G network standard. In addition, the region also needs 5G network signal.
1. 5G cannot be used. Because the Mi 8SE does not support 5G networks, it only supports 2G, 3G and 4G networks.
3. If you want to use 5G network, you need to buy a phone that supports 5G network.