At the moment, not all areas support 5G network. We recommend you ask locals and your network operator to confirm if your location supports 5G network and if your SIM card supports 5G network.
If both the local network and the SIM card support 5G network, try the following:
1. Enter Settings> Network & Internet> SIMs, and check if the network setting option of the SIM card selected in data preference is correct.
2. Enter Settings> Network & Internet> SIMs, select the corresponding network card, and check if the Mobile Data switch is turned on.
3. Enter Settings> Network & Internet> SIMs, select the corresponding network card, and check if the Preferred Network Type is set to 5G.
4. Ask your network operator whether to enable roaming restrictions. If yes, enter Settings> Network & Internet> SIMs, select the corresponding network card, and check if the Roaming switch is turned on.
5. Enter Settings> Network & Internet> SIMs, select the corresponding network card, and check if the data warning exceeds the limit.
6. If Battery Saver is enabled, close it and check again.
7. Switch the Airplane Mode on and off, or restart your phone and check again.
If the issue persists, contact the Nothing Support Team for further assistance.